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Houston-Galveston-Brazoria Region Monitor Summary

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Parameter Monitored POC First Valid Data Monitor Status
Houston East C1/G316
    Nitric Oxide 1 May 8, 1997 Active
Nitrogen Dioxide 1 R May 8, 1997 Active
Oxides of Nitrogen 1 May 8, 1997 Active
Ozone 2 R May 7, 1997 Active
Wind Speed 1 May 7, 1997 Active
Resultant Wind Speed 1 May 7, 1997 Active
Resultant Wind Direction 1 May 7, 1997 Active
Maximum Wind Gust 1 May 7, 1997 Active
Standard Deviation of Horizontal Wind Direction 1 May 7, 1997 Active
Outdoor Temperature 1 May 7, 1997 Active
PM-2.5 (Local Conditions) 1 R Jul 12, 2017 Active
PM-2.5 (Local Conditions) 3 N Feb 4, 2000 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Deactivated Mar 10, 2017
Houston Aldine C8/AF108/X150
    Carbon Monoxide 1 R Apr 4, 1997 Deactivated Sep 4, 2014
NOy 2 Jun 8, 2000 Active
Nitric Oxide 1 Apr 7, 1997 Active
Nitric Oxide 2 Jun 8, 2000 Active
Nitrogen Dioxide 1 R May 9, 1997 Active
Oxides of Nitrogen 1 Apr 7, 1997 Active
NOz 2 Jun 8, 2000 Deactivated Oct 17, 2000
Ozone 2 R Apr 2, 1997 Active
Ozone 3 R Aug 24, 1999 Deactivated Dec 1, 1999
Wind Speed 1 Apr 2, 1997 Active
Resultant Wind Speed 1 Apr 2, 1997 Active
Resultant Wind Direction 1 Apr 2, 1997 Active
Maximum Wind Gust 1 Apr 2, 1997 Active
Standard Deviation of Horizontal Wind Direction 1 Apr 2, 1997 Active
Outdoor Temperature 1 Apr 2, 1997 Active
Dew Point Temperature 1 Mar 1, 2000 Active
Relative Humidity 1 Mar 1, 2000 Active
Solar Radiation 1 Jul 15, 1998 Active
Barometric Pressure 1 Apr 14, 1997 Active
PM-2.5 (Local Conditions) 3 N Aug 3, 2001 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) 4 N May 22, 2019 Active
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Deactivated May 6, 2019
Texas City C10  Deactivated: Jul 8, 2004
    Sulfur Dioxide 2 R May 22, 1997 Deactivated Feb 18, 2004
Hydrogen Sulfide 2 R Jan 10, 2002 Deactivated Feb 8, 2004
Ozone 2 R May 22, 1997 Deactivated Jul 8, 2004
Wind Speed 1 May 22, 1997 Deactivated Jul 8, 2004
Resultant Wind Speed 1 May 22, 1997 Deactivated Jul 8, 2004
Resultant Wind Direction 1 May 21, 1997 Deactivated Jul 8, 2004
Maximum Wind Gust 1 May 21, 1997 Deactivated Jul 8, 2004
Standard Deviation of Horizontal Wind Direction 1 May 22, 1997 Deactivated Jul 8, 2004
Outdoor Temperature 1 May 21, 1997 Deactivated Jul 8, 2004
Clute C11/A111
    Ozone 2 R Apr 16, 1997 Deactivated Jun 11, 2003
Wind Speed 1 Apr 16, 1997 Active
Resultant Wind Speed 1 Apr 16, 1997 Active
Resultant Wind Direction 1 Apr 16, 1997 Active
Maximum Wind Gust 1 Apr 16, 1997 Active
Standard Deviation of Horizontal Wind Direction 1 Apr 16, 1997 Active
Outdoor Temperature 1 Apr 16, 1997 Active
Channelview C15/AH115
    Nitric Oxide 2 Jul 25, 2001 Active
Nitrogen Dioxide 2 R Jul 25, 2001 Active
Oxides of Nitrogen 2 Jul 25, 2001 Active
Ozone 3 R Jul 25, 2001 Active
Wind Speed 1 Sep 23, 1998 Active
Resultant Wind Speed 1 Sep 23, 1998 Active
Resultant Wind Direction 1 Sep 23, 1998 Active
Maximum Wind Gust 1 Sep 23, 1998 Active
Standard Deviation of Horizontal Wind Direction 1 Sep 23, 1998 Active
Outdoor Temperature 1 Sep 23, 1998 Active
Dew Point Temperature 1 Jul 8, 2002 Active
Relative Humidity 1 Jul 8, 2002 Active
Solar Radiation 1 Jun 26, 2002 Active
PM-2.5 (Local Conditions) 3 N Feb 4, 2000 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Deactivated Jul 25, 2013
Houston Deer Park C18  Deactivated: Oct 22, 1996
    Sulfur Dioxide 1 R Aug 2, 1996 Deactivated Oct 23, 1996
Ozone 2 R Aug 2, 1996 Deactivated Oct 23, 1996
Wind Speed 1 Aug 2, 1996 Deactivated Oct 23, 1996
Resultant Wind Speed 1 Aug 2, 1996 Deactivated Oct 23, 1996
Resultant Wind Direction 1 Aug 2, 1996 Deactivated Oct 23, 1996
Maximum Wind Gust 1 Aug 2, 1996 Deactivated Oct 23, 1996
Standard Deviation of Horizontal Wind Direction 1 Aug 2, 1996 Deactivated Oct 23, 1996
Outdoor Temperature 1 Aug 2, 1996 Deactivated Oct 23, 1996
Solar Radiation 1 Sep 10, 1996 Deactivated Oct 23, 1996
Houston Manchester C22  Deactivated: Jan 20, 1998
    Sulfur Dioxide 1 R Aug 2, 1996 Deactivated Jan 20, 1998
Ozone 1 R Aug 2, 1996 Deactivated Jan 20, 1998
Wind Speed 1 Aug 2, 1996 Deactivated Jan 20, 1998
Resultant Wind Speed 1 Aug 2, 1996 Deactivated Jan 20, 1998
Resultant Wind Direction 1 Aug 2, 1996 Deactivated Jan 20, 1998
Maximum Wind Gust 1 Aug 2, 1996 Deactivated Jan 20, 1998
Standard Deviation of Horizontal Wind Direction 1 Aug 2, 1996 Deactivated Jan 20, 1998
Outdoor Temperature 1 Aug 2, 1996 Deactivated Jan 20, 1998
Northwest Harris Co. C26/A110/X154
    Nitric Oxide 1 May 1, 1997 Active
Nitrogen Dioxide 1 R May 1, 1997 Active
Oxides of Nitrogen 1 May 1, 1997 Active
Ozone 2 R Apr 9, 1997 Active
Wind Speed 1 Apr 1, 1997 Active
Resultant Wind Speed 1 Apr 1, 1997 Active
Resultant Wind Direction 1 Apr 1, 1997 Active
Maximum Wind Gust 1 Apr 1, 1997 Active
Standard Deviation of Horizontal Wind Direction 1 Apr 1, 1997 Active
Outdoor Temperature 1 Apr 1, 1997 Active
Dew Point Temperature 1 Jun 27, 2002 Active
Relative Humidity 1 Jun 27, 2002 Active
Solar Radiation 1 Jul 15, 1998 Active
Precipitation 1 Jun 27, 2002 Deactivated Jul 9, 2002
Galveston Airport C34/A109/X152  Deactivated: Mar 21, 2007
    NOy 2 Jun 14, 2000 Deactivated Mar 21, 2007
Nitric Oxide 1 Apr 16, 1997 Deactivated Mar 21, 2007
Nitric Oxide 2 Jun 14, 2000 Deactivated Mar 21, 2007
Nitrogen Dioxide 1 R Apr 16, 1997 Deactivated Mar 21, 2007
Oxides of Nitrogen 1 Apr 16, 1997 Deactivated Mar 21, 2007
NOz 2 Jun 15, 2000 Deactivated Oct 17, 2000
Ozone 1 R Apr 17, 1997 Deactivated Mar 21, 2007
Wind Speed 1 Apr 16, 1997 Deactivated Mar 21, 2007
Resultant Wind Speed 1 Apr 16, 1997 Deactivated Mar 21, 2007
Resultant Wind Direction 1 Apr 16, 1997 Deactivated Mar 21, 2007
Maximum Wind Gust 1 Apr 16, 1997 Deactivated Mar 21, 2007
Standard Deviation of Horizontal Wind Direction 1 Apr 16, 1997 Deactivated Mar 21, 2007
Outdoor Temperature 1 Apr 16, 1997 Deactivated Mar 21, 2007
Dew Point Temperature 1 Aug 7, 1998 Deactivated Mar 21, 2007
Relative Humidity 1 Feb 29, 2000 Deactivated Mar 21, 2007
Solar Radiation 1 Sep 24, 1997 Deactivated Mar 21, 2007
PM-2.5 (Local Conditions) 3 N Feb 28, 2000 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Deactivated Mar 21, 2007
Hou.DeerPrk2 C35/235/1001/AFH139FP239
    Carbon Monoxide 1 R Mar 21, 1997 Deactivated Dec 14, 2010
Carbon Monoxide 2 N Dec 14, 2010 Active
Sulfur Dioxide 1 N Dec 17, 2010 Deactivated Dec 13, 2010
Sulfur Dioxide 2 R Dec 13, 2010 Active
NOy 2 Jun 15, 2000 Deactivated Dec 14, 2010
NOy 3 Dec 14, 2010 Active
Nitric Oxide 1 Mar 31, 1997 Deactivated Feb 19, 2019
Nitric Oxide 2 Jun 15, 2000 Deactivated Dec 14, 2010
Nitric Oxide 3 Dec 14, 2010 Active
Nitrogen Dioxide 1 R Mar 31, 1997 Deactivated Feb 19, 2019
Nitrogen Dioxide 4 N Feb 26, 2019 Active
Oxides of Nitrogen 1 Mar 31, 1997 Deactivated Feb 19, 2019
Total Non-Methane Organic Compounds 1 May 1, 1998 Deactivated Mar 10, 2000
Methane 1 May 1, 1998 Deactivated Mar 10, 2000
Ozone 1 R Mar 21, 1997 Active
Wind Speed 1 Mar 20, 1997 Active
Resultant Wind Speed 1 Mar 20, 1997 Active
Resultant Wind Direction 1 Mar 20, 1997 Active
Maximum Wind Gust 1 Mar 20, 1997 Active
Standard Deviation of Horizontal Wind Direction 1 Mar 20, 1997 Active
Outdoor Temperature 1 Mar 20, 1997 Active
Dew Point Temperature 1 Feb 29, 2000 Active
Relative Humidity 1 Feb 29, 2000 Active
Solar Radiation 1 Oct 24, 1996 Active
Ultraviolet Radiation 1 May 15, 2019 Active
Barometric Pressure 1 May 15, 2019 Active
Precipitation 2 May 15, 2019 Active
Precipitation 1 Oct 20, 1999 Deactivated Oct 22, 1999
PM-10 (Local Conditions) 4 Dec 14, 2010 Active
PM10-2.5 Local Conditions 4 Dec 14, 2010 Active
PM-2.5 (Local Conditions) 3 N Feb 29, 2000 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) 4 N Dec 14, 2010 Active
Organic Carbon PM2.5 LC 1 Sep 11, 2002 Deactivated Jan 24, 2012
Nitrate PM2.5 LC 1 Sep 11, 2002 Deactivated Jan 24, 2012
Elemental Carbon PM2.5 LC 1 Sep 11, 2002 Deactivated Jan 24, 2012
Black Carbon PM2.5 1 Apr 16, 2003 Deactivated Jan 17, 2017
Sulfate PM2.5 LC 1 Sep 11, 2002 Deactivated Jan 24, 2012
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Active
Seabrook Friendship Park C45
    Sulfur Dioxide 1 R Jul 29, 2001 Deactivated Dec 31, 2017
Nitric Oxide 1 Jul 29, 2001 Active
Nitrogen Dioxide 1 R Jul 29, 2001 Active
Oxides of Nitrogen 1 Jul 29, 2001 Active
Ozone 1 R Jul 29, 2001 Active
Wind Speed 1 Jul 29, 2001 Active
Resultant Wind Speed 1 Jul 29, 2001 Active
Resultant Wind Direction 1 Jul 29, 2001 Active
Maximum Wind Gust 1 Jul 29, 2001 Active
Standard Deviation of Horizontal Wind Direction 1 Jul 29, 2001 Active
Outdoor Temperature 1 Jul 29, 2001 Active
Solar Radiation 1 Jun 26, 2002 Active
PM-2.5 (Local Conditions) 3 N Aug 17, 2001 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Active
Houston Wharton C48  Deactivated: May 3, 2012
    Wind Speed 1 Mar 24, 1999 Deactivated May 3, 2012
Resultant Wind Speed 1 Mar 24, 1999 Deactivated May 3, 2012
Resultant Wind Direction 1 Mar 24, 1999 Deactivated May 3, 2012
Maximum Wind Gust 1 Mar 24, 1999 Deactivated May 3, 2012
Standard Deviation of Horizontal Wind Direction 1 Mar 24, 1999 Deactivated May 3, 2012
Outdoor Temperature 1 Mar 24, 1999 Deactivated May 3, 2012
Ellington Field C51  Deactivated: May 4, 2005
    Wind Speed 1 May 22, 1997 Deactivated May 3, 2005
Resultant Wind Speed 1 May 22, 1997 Deactivated May 3, 2005
Resultant Wind Direction 1 May 22, 1997 Deactivated May 3, 2005
Maximum Wind Gust 1 May 22, 1997 Deactivated May 3, 2005
Standard Deviation of Horizontal Wind Direction 1 May 22, 1997 Deactivated May 3, 2005
Outdoor Temperature 1 May 22, 1997 Deactivated May 3, 2005
Precipitation 1 Mar 3, 1998 Deactivated May 3, 2005
Precipitation 1 Nov 13, 1997 Deactivated Feb 27, 1998
Houston Bayland Park C53/A146
    NOy 2 Jun 16, 2000 Deactivated May 18, 2007
Nitric Oxide 1 Mar 30, 1998 Active
Nitric Oxide 2 Jun 16, 2000 Deactivated May 18, 2007
Nitrogen Dioxide 1 R Mar 30, 1998 Active
Oxides of Nitrogen 1 Mar 30, 1998 Active
NOz 2 Jun 16, 2000 Deactivated Oct 17, 2000
Ozone 1 R Mar 29, 1998 Active
Wind Speed 1 Mar 24, 1998 Active
Resultant Wind Speed 1 Mar 24, 1998 Active
Resultant Wind Direction 1 Mar 24, 1998 Active
Maximum Wind Gust 1 Mar 24, 1998 Active
Standard Deviation of Horizontal Wind Direction 1 Mar 24, 1998 Active
Outdoor Temperature 1 Mar 24, 1998 Active
Dew Point Temperature 1 May 19, 1998 Deactivated Jun 26, 2002
Relative Humidity 1 Mar 1, 2000 Deactivated Jun 26, 2002
Visibility 1 Aug 17, 2001 Deactivated Aug 24, 2005
Solar Radiation 1 Jul 18, 1998 Active
Conroe C65  Deactivated: Sep 25, 2001
    Nitric Oxide 1 Oct 6, 1999 Deactivated Sep 25, 2001
Nitrogen Dioxide 1 R Oct 6, 1999 Deactivated Sep 25, 2001
Oxides of Nitrogen 1 Oct 6, 1999 Deactivated Sep 25, 2001
Ozone 1 R Oct 5, 1999 Deactivated Sep 25, 2001
Wind Speed 1 Oct 5, 1999 Deactivated Sep 21, 2001
Resultant Wind Speed 1 Oct 5, 1999 Deactivated Sep 21, 2001
Resultant Wind Direction 1 Oct 5, 1999 Deactivated Sep 21, 2001
Maximum Wind Gust 1 Oct 5, 1999 Deactivated Sep 21, 2001
Standard Deviation of Horizontal Wind Direction 1 Oct 5, 1999 Deactivated Sep 21, 2001
Outdoor Temperature 1 Oct 5, 1999 Deactivated Sep 21, 2001
PM-2.5 (Local Conditions) 3 N Feb 16, 2000 Deactivated Sep 21, 2001
Conroe Relocated C78/A321
    Nitric Oxide 1 Nov 6, 2001 Active
Nitrogen Dioxide 1 R Nov 6, 2001 Active
Oxides of Nitrogen 1 Nov 6, 2001 Active
Ozone 1 R Nov 6, 2001 Active
Wind Speed 1 Oct 26, 2001 Active
Resultant Wind Speed 1 Oct 26, 2001 Active
Resultant Wind Direction 1 Oct 26, 2001 Active
Maximum Wind Gust 1 Oct 26, 2001 Active
Standard Deviation of Horizontal Wind Direction 1 Oct 26, 2001 Active
Outdoor Temperature 1 Oct 26, 2001 Active
Solar Radiation 1 Jun 26, 2002 Active
PM-2.5 (Local Conditions) 3 N Nov 8, 2001 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Active
Houston Regional Office C81  Deactivated: Jun 25, 2012
    Sulfur Dioxide 1 R May 4, 2000 Deactivated Jun 25, 2012
Ozone 1 R May 4, 2000 Deactivated Jun 25, 2012
Wind Speed 1 May 3, 2000 Deactivated Jun 25, 2012
Resultant Wind Speed 1 May 3, 2000 Deactivated Jun 25, 2012
Resultant Wind Direction 1 May 3, 2000 Deactivated Jun 25, 2012
Maximum Wind Gust 1 May 3, 2000 Deactivated Jun 25, 2012
Standard Deviation of Horizontal Wind Direction 1 May 3, 2000 Deactivated Jun 25, 2012
Outdoor Temperature 1 May 3, 2000 Deactivated Jun 25, 2012
Solar Radiation 1 Jun 27, 2002 Deactivated Jun 25, 2012
Manvel Croix Park C84
    Nitric Oxide 1 Aug 24, 2001 Active
Nitrogen Dioxide 1 R Aug 24, 2001 Active
Oxides of Nitrogen 1 Aug 24, 2001 Active
Ozone 1 R Aug 24, 2001 Active
Wind Speed 1 Aug 23, 2001 Active
Resultant Wind Speed 1 Aug 23, 2001 Active
Resultant Wind Direction 1 Aug 23, 2001 Active
Maximum Wind Gust 1 Aug 23, 2001 Active
Standard Deviation of Horizontal Wind Direction 1 Aug 23, 2001 Active
Outdoor Temperature 1 Aug 23, 2001 Active
Smith Point Hawkins Camp C96/C638
    Ozone 2 N Aug 3, 2005 Deactivated Dec 13, 2006
Wind Speed 1 Sep 6, 2000 Active
Resultant Wind Speed 1 Sep 6, 2000 Active
Resultant Wind Direction 1 Sep 6, 2000 Active
Maximum Wind Gust 1 Sep 6, 2000 Active
Standard Deviation of Horizontal Wind Direction 1 Sep 6, 2000 Active
Outdoor Temperature 1 Sep 6, 2000 Active
Nessler Pool A100  Deactivated: Aug 21, 2007
    Wind Speed 1 Oct 9, 1998 Deactivated Aug 21, 2007
Resultant Wind Speed 1 Oct 9, 1998 Deactivated Aug 21, 2007
Resultant Wind Direction 1 Oct 9, 1998 Deactivated Aug 21, 2007
Maximum Wind Gust 1 Oct 1, 1998 Deactivated Aug 21, 2007
Standard Deviation of Horizontal Wind Direction 1 Oct 9, 1998 Deactivated Aug 21, 2007
Outdoor Temperature 1 Oct 9, 1998 Deactivated Aug 21, 2007
Relative Humidity 1 Aug 5, 1998 Deactivated Apr 21, 1999
Shore Acres A145
    Wind Speed 1 Aug 20, 1998 Active
Resultant Wind Speed 1 Aug 20, 1998 Active
Resultant Wind Direction 1 Aug 20, 1998 Active
Maximum Wind Gust 1 Aug 20, 1998 Active
Standard Deviation of Horizontal Wind Direction 1 Aug 20, 1998 Active
Outdoor Temperature 1 Aug 20, 1998 Active
Baytown A148
    Wind Speed 1 Aug 14, 1998 Active
Resultant Wind Speed 1 Sep 1, 1998 Active
Resultant Wind Direction 1 Sep 1, 1998 Active
Maximum Wind Gust 1 Aug 14, 1998 Active
Standard Deviation of Horizontal Wind Direction 1 Sep 23, 1998 Active
Outdoor Temperature 1 Aug 14, 1998 Active
PM-2.5 (Local Conditions) 2 R Mar 15, 2017 Active
PM-2.5 (Local Conditions) Acceptable 3 Jul 25, 2013 Deactivated Mar 14, 2017
Galena Park A167
    3-Methyl-1-Butene And Cyclopentene 2 Sep 8, 2011 Deactivated Jan 26, 2013
2-Methylhexane And 2-3-Dimethylpentane 2 Sep 9, 2011 Deactivated Jan 26, 2013
Sum of PAMS Target Compounds 2 Nov 10, 2011 Deactivated Jan 26, 2013
Sum of PAMS Target Compounds 3 Dec 5, 2011 Deactivated Jan 26, 2013
N-Dodecane 2 Sep 9, 2011 Deactivated Jan 26, 2013
Ethane 2 Sep 7, 2011 Deactivated Jan 26, 2013
Ethylene 2 Sep 7, 2011 Deactivated Jan 26, 2013
Propane 2 Sep 7, 2011 Deactivated Jan 26, 2013
Propylene 2 Sep 7, 2011 Deactivated Jan 26, 2013
Acetylene 2 Sep 7, 2011 Deactivated Jan 26, 2013
N-Butane 2 Sep 7, 2011 Deactivated Jan 26, 2013
Iso-Butane 2 Sep 8, 2011 Deactivated Jan 26, 2013
Trans-2-Butene 2 Sep 8, 2011 Deactivated Jan 26, 2013
Cis-2-Butene 2 Sep 8, 2011 Deactivated Jan 26, 2013
1,3 Butadiene 2 Sep 8, 2011 Deactivated Jan 26, 2013
n-Pentane 2 Sep 8, 2011 Deactivated Jan 26, 2013
Iso-Pentane 2 Sep 8, 2011 Deactivated Jan 26, 2013
1-Pentene 2 Sep 8, 2011 Deactivated Jan 26, 2013
Trans-2-Pentene 2 Sep 8, 2011 Deactivated Jan 26, 2013
Cis-2-Pentene 2 Sep 8, 2011 Deactivated Jan 26, 2013
2-Methyl-2-Butene 2 Sep 8, 2011 Deactivated Jan 26, 2013
3-Methylpentane 2 Sep 8, 2011 Deactivated Jan 26, 2013
n-Hexane 2 Sep 8, 2011 Deactivated Jan 26, 2013
N-Heptane 2 Sep 9, 2011 Deactivated Jan 26, 2013
N-Octane 2 Sep 9, 2011 Deactivated Jan 26, 2013
4-Methyl-1-Pentene 2 Sep 9, 2011 Deactivated Jan 26, 2013
N-Nonane 2 Sep 9, 2011 Deactivated Jan 26, 2013
N-Decane 2 Sep 9, 2011 Deactivated Jan 26, 2013
Cyclopentane 2 Sep 8, 2011 Deactivated Jan 26, 2013
Isoprene 2 Sep 8, 2011 Deactivated Jan 26, 2013
2,2-Dimethylbutane 2 Sep 8, 2011 Deactivated Jan 26, 2013
2-Methyl-1-Pentene 2 Sep 8, 2011 Deactivated Jan 26, 2013
2,4-Dimethylpentane 2 Sep 8, 2011 Deactivated Jan 26, 2013
Cyclohexane 2 Sep 9, 2011 Deactivated Jan 26, 2013
3-Methylhexane 2 Sep 9, 2011 Deactivated Jan 26, 2013
2,2,4-Trimethylpentane 2 Sep 9, 2011 Deactivated Jan 26, 2013
2,3,4-Trimethylpentane 2 Sep 9, 2011 Deactivated Jan 26, 2013
3-Methylheptane 2 Sep 9, 2011 Deactivated Jan 26, 2013
Methylcyclohexane 2 Sep 9, 2011 Deactivated Jan 26, 2013
Methylcyclopentane 2 Sep 8, 2011 Deactivated Jan 26, 2013
Iso-Butene 2 Sep 8, 2011 Deactivated Jan 26, 2013
1-Butene 2 Sep 8, 2011 Deactivated Jan 26, 2013
2,3-Dimethylbutane 2 Sep 8, 2011 Deactivated Jan 26, 2013
2-Methylpentane 2 Sep 8, 2011 Deactivated Jan 26, 2013
Trans-2-Hexene 2 Sep 9, 2011 Deactivated Jan 26, 2013
Cis-2-Hexene 2 Sep 8, 2011 Deactivated Jan 26, 2013
N-Undecane 2 Sep 9, 2011 Deactivated Jan 26, 2013
2-Methylheptane 2 Sep 9, 2011 Deactivated Jan 26, 2013
M/P Xylene 2 Sep 9, 2011 Deactivated Jan 26, 2013
Benzene 2 Sep 9, 2011 Deactivated Jan 26, 2013
Toluene 2 Sep 9, 2011 Deactivated Jan 26, 2013
Ethyl Benzene 2 Sep 9, 2011 Deactivated Jan 26, 2013
O-Xylene 2 Sep 9, 2011 Deactivated Jan 26, 2013
1,3,5-Trimethylbenzene 2 Sep 9, 2011 Deactivated Jan 26, 2013
1,2,4-Trimethylbenzene 2 Sep 9, 2011 Deactivated Jan 26, 2013
N-Propylbenzene 2 Sep 9, 2011 Deactivated Jan 26, 2013
Isopropylbenzene 2 Sep 9, 2011 Deactivated Jan 26, 2013
O-Ethyltoluene 2 Sep 9, 2011 Deactivated Jan 26, 2013
M-Ethyltoluene 2 Sep 9, 2011 Deactivated Jan 26, 2013
P-Ethyltoluene 2 Sep 9, 2011 Deactivated Jan 26, 2013
M-Diethylbenzene 2 Sep 9, 2011 Deactivated Jan 26, 2013
P-Diethylbenzene 2 Sep 9, 2011 Deactivated Jan 26, 2013
Styrene 2 Sep 9, 2011 Deactivated Jan 26, 2013
1,2,3-Trimethylbenzene 2 Sep 9, 2011 Deactivated Jan 26, 2013
Naphtalene 2 Sep 9, 2011 Deactivated Jan 26, 2013
Wind Speed 1 Jan 12, 2000 Active
Resultant Wind Speed 1 Jan 12, 2000 Active
Resultant Wind Direction 1 Jan 12, 2000 Active
Maximum Wind Gust 1 Jan 12, 2000 Active
Standard Deviation of Horizontal Wind Direction 1 Jan 12, 2000 Active
Outdoor Temperature 1 Jan 12, 2000 Active
Houston Milby Park A169
    Wind Speed 1 Apr 7, 1999 Active
Resultant Wind Speed 1 Apr 7, 1999 Active
Resultant Wind Direction 1 Apr 7, 1999 Active
Maximum Wind Gust 1 Mar 24, 1999 Active
Standard Deviation of Horizontal Wind Direction 1 Apr 7, 1999 Active
Outdoor Temperature 1 Mar 24, 1999 Active
Port of Houston (Fuel Cell) C240  Deactivated: Aug 9, 2001
    Fuel Cell Amperage 1 Feb 1, 2001 Deactivated Aug 9, 2001
Fuel Cell Voltage DC 1 Feb 1, 2001 Deactivated Aug 9, 2001
Fuel Cell Power 1 Feb 1, 2001 Deactivated Aug 9, 2001
Fuel Cell Efficiency 1 Feb 8, 2001 Deactivated Aug 9, 2001
Carbon Monoxide 1 R Jan 31, 2001 Deactivated Aug 9, 2001
Sulfur Dioxide 1 R Feb 1, 2001 Deactivated Aug 9, 2001
Nitric Oxide 1 Feb 2, 2001 Deactivated Aug 9, 2001
Nitrogen Dioxide 1 R Feb 2, 2001 Deactivated Aug 9, 2001
Oxides of Nitrogen 1 Feb 2, 2001 Deactivated Aug 9, 2001
Ozone 1 R Feb 2, 2001 Deactivated Aug 9, 2001
Wind Speed 1 Jan 24, 2001 Deactivated Aug 9, 2001
Resultant Wind Speed 1 Jan 24, 2001 Deactivated Aug 9, 2001
Resultant Wind Direction 1 Jan 24, 2001 Deactivated Aug 9, 2001
Maximum Wind Gust 1 Jan 24, 2001 Deactivated Aug 9, 2001
Standard Deviation of Horizontal Wind Direction 1 Jan 24, 2001 Deactivated Aug 9, 2001
Outdoor Temperature 1 Jan 24, 2001 Deactivated Aug 9, 2001
La Porte Airport C243
    Wind Speed 1 Jun 9, 2005 Active
Resultant Wind Speed 1 Jun 9, 2005 Active
Resultant Wind Direction 1 Jun 9, 2005 Active
Maximum Wind Gust 1 Jun 9, 2005 Active
Standard Deviation of Horizontal Wind Direction 1 Jun 9, 2005 Active
Outdoor Temperature 1 Jun 9, 2005 Active
Precipitation 1 Jun 9, 2005 Active
San Jacinto Monument C166/C245  Deactivated: Apr 16, 2003
    Nitric Oxide 1 Aug 14, 2001 Deactivated Apr 16, 2003
Nitrogen Dioxide 1 R Aug 14, 2001 Deactivated Apr 16, 2003
Oxides of Nitrogen 1 Aug 14, 2001 Deactivated Apr 16, 2003
Total Non-Methane Organic Compounds 1 Aug 15, 2001 Deactivated Apr 16, 2003
Methane 1 Aug 11, 2001 Deactivated Apr 16, 2003
Ozone 1 R Aug 10, 2001 Deactivated Apr 16, 2003
Wind Speed 1 Apr 17, 2000 Deactivated Apr 16, 2003
Resultant Wind Speed 1 Apr 17, 2000 Deactivated Apr 16, 2003
Resultant Wind Direction 1 Apr 17, 2000 Deactivated Apr 16, 2003
Maximum Wind Gust 1 Apr 17, 2000 Deactivated Apr 16, 2003
Standard Deviation of Horizontal Wind Direction 1 Apr 17, 2000 Deactivated Apr 16, 2003
Outdoor Temperature 1 Apr 17, 2000 Deactivated Apr 16, 2003
Kingwood C309  Deactivated: Jan 21, 2017
    Precipitation 1 Feb 13, 2001 Deactivated Jan 20, 2017
PM-2.5 (Local Conditions) 3 N Feb 14, 2001 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Deactivated Jan 1, 2017
Clinton C403/C304/AH113
    Carbon Monoxide 1 R Jan 20, 2000 Active
Sulfur Dioxide 2 R Jan 20, 2000 Active
Nitric Oxide 1 Jan 19, 2000 Active
Nitrogen Dioxide 1 R Jan 19, 2000 Active
Oxides of Nitrogen 1 Jan 19, 2000 Active
Ozone 3 R Jan 19, 2000 Active
Wind Speed 1 Dec 17, 1997 Active
Resultant Wind Speed 1 Dec 17, 1997 Active
Resultant Wind Direction 1 Dec 17, 1997 Active
Maximum Wind Gust 1 Dec 17, 1997 Active
Standard Deviation of Horizontal Wind Direction 1 Dec 17, 1997 Active
Outdoor Temperature 1 Dec 17, 1997 Active
Dew Point Temperature 1 Jan 14, 2005 Active
Relative Humidity 1 Dec 17, 1997 Active
Solar Radiation 1 Jul 16, 1998 Active
Ultraviolet Radiation 1 Jul 16, 1998 Active
Ultraviolet Radiation 2 May 15, 2002 Deactivated Nov 19, 2008
Ultraviolet Radiation 3 Jun 17, 2002 Deactivated Nov 19, 2008
Ultraviolet Radiation 4 Feb 18, 2004 Deactivated Nov 19, 2008
Ultraviolet Radiation 5 Feb 18, 2004 Deactivated Nov 19, 2008
Barometric Pressure 1 Feb 8, 2005 Active
Precipitation 1 Jun 29, 2001 Active
PM-2.5 (Local Conditions) 3 N Oct 17, 2001 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Active
Houston Kirkpatrick C404
    Wind Speed 1 Feb 16, 2000 Active
Resultant Wind Speed 1 Feb 16, 2000 Active
Resultant Wind Direction 1 Feb 16, 2000 Active
Maximum Wind Gust 1 Feb 16, 2000 Active
Standard Deviation of Horizontal Wind Direction 1 Feb 16, 2000 Active
Outdoor Temperature 1 Feb 16, 2000 Active
Houston North Wayside C405
    Sulfur Dioxide 1 R Feb 22, 2000 Deactivated Dec 29, 2017
Ozone 1 R Feb 23, 2000 Active
Houston Monroe C406
    Sulfur Dioxide 1 R Feb 9, 2000 Deactivated Dec 21, 2017
Ozone 1 R Feb 9, 2000 Active
Precipitation 1 Apr 3, 2002 Active
Houston Crawford C407  Deactivated: Mar 27, 2001
    Carbon Monoxide 1 R Feb 23, 2000 Deactivated Mar 27, 2001
Nitric Oxide 1 Feb 24, 2000 Deactivated Mar 27, 2001
Nitrogen Dioxide 1 R Feb 24, 2000 Deactivated Mar 27, 2001
Oxides of Nitrogen 1 Feb 24, 2000 Deactivated Mar 27, 2001
Ozone 2 R Feb 23, 2000 Deactivated Mar 27, 2001
Lang C408
    Carbon Monoxide 1 R Mar 8, 2000 Deactivated Jan 5, 2015
Nitric Oxide 1 Mar 9, 2000 Active
Nitrogen Dioxide 1 R Mar 9, 2000 Active
Oxides of Nitrogen 1 Mar 9, 2000 Active
Ozone 2 R Mar 9, 2000 Active
Houston Croquet C409
    Sulfur Dioxide 2 R Feb 9, 2000 Active
Ozone 2 R Feb 8, 2000 Active
Wind Speed 1 Feb 8, 2000 Active
Resultant Wind Speed 1 Feb 8, 2000 Active
Resultant Wind Direction 1 Feb 8, 2000 Active
Maximum Wind Gust 1 Feb 8, 2000 Active
Standard Deviation of Horizontal Wind Direction 1 Feb 8, 2000 Active
Outdoor Temperature 1 Feb 8, 2000 Active
Houston Westhollow C410
    Ozone 1 R Mar 7, 2000 Active
Wind Speed 1 Mar 7, 2000 Active
Resultant Wind Speed 1 Mar 7, 2000 Active
Resultant Wind Direction 1 Mar 7, 2000 Active
Maximum Wind Gust 1 Mar 7, 2000 Active
Standard Deviation of Horizontal Wind Direction 1 Mar 7, 2000 Active
Outdoor Temperature 1 Mar 7, 2000 Active
Houston Texas Avenue C411  Deactivated: Oct 24, 2016
    Carbon Monoxide 1 R Mar 30, 2001 Deactivated Jan 15, 2015
Nitric Oxide 1 Mar 31, 2001 Deactivated Oct 24, 2016
Nitrogen Dioxide 1 R Mar 31, 2001 Deactivated Oct 24, 2016
Oxides of Nitrogen 1 Mar 31, 2001 Deactivated Oct 24, 2016
Ozone 1 R Mar 30, 2001 Deactivated Oct 24, 2016
Park Place C416
    Carbon Monoxide 1 R Feb 23, 2006 Deactivated Jan 6, 2015
Sulfur Dioxide 1 R Feb 22, 2006 Active
Nitric Oxide 1 Mar 21, 2006 Active
Nitrogen Dioxide 1 R Mar 21, 2006 Active
Oxides of Nitrogen 1 Mar 21, 2006 Active
Ozone 1 R Feb 22, 2006 Active
Wind Speed 1 Feb 22, 2006 Active
Resultant Wind Speed 1 Feb 22, 2006 Active
Resultant Wind Direction 1 Feb 22, 2006 Active
Maximum Wind Gust 1 Feb 22, 2006 Active
Standard Deviation of Horizontal Wind Direction 1 Feb 22, 2006 Active
Outdoor Temperature 1 Feb 22, 2006 Active
Relative Humidity 1 Feb 22, 2006 Active
Solar Radiation 1 Feb 22, 2006 Active
Ultraviolet Radiation 1 Feb 22, 2006 Active
Barometric Pressure 1 Feb 22, 2006 Active
Precipitation 1 Feb 22, 2006 Active
PM-2.5 (Local Conditions) 3 N Feb 22, 2006 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Active
Sheldon C551
    Ozone 1 N Apr 30, 2002 Deactivated Oct 2, 2017
Ozone 2 N Oct 30, 2002 Deactivated Dec 16, 2002
Baytown Wetlands Center C552
    Ozone 1 N Jun 19, 2003 Active
Crosby Library C553
    Ozone 1 N Jun 18, 2003 Active
West Houston C554
    Ozone 1 N Jan 1, 2004 Active
Kingwood Library C555  Deactivated: Mar 18, 2010
    Ozone 1 N Apr 16, 2004 Deactivated Mar 17, 2010
La Porte Sylvan Beach C556
    Ozone 1 N Apr 5, 2004 Active
Wind Speed 1 Jun 24, 2005 Deactivated Dec 31, 2018
Resultant Wind Speed 1 Jun 24, 2005 Deactivated Dec 31, 2018
Resultant Wind Direction 1 Jun 24, 2005 Deactivated Dec 31, 2018
Maximum Wind Gust 1 Jun 24, 2005 Deactivated Dec 31, 2018
Standard Deviation of Horizontal Wind Direction 1 Jun 24, 2005 Deactivated Dec 31, 2018
Solar Radiation 1 Jul 15, 2007 Deactivated Dec 31, 2018
Mercer Arboretum C557
    Ozone 1 N Feb 18, 2004 Active
Tom Bass C558
    Ozone 1 N Feb 6, 2004 Active
Katy Park C559
    Ozone 1 N Mar 12, 2004 Active
Wind Speed 1 May 23, 2006 Deactivated Dec 31, 2018
Resultant Wind Speed 1 May 23, 2006 Deactivated Dec 31, 2018
Resultant Wind Direction 1 May 23, 2006 Deactivated Dec 31, 2018
Maximum Wind Gust 1 May 23, 2006 Deactivated Dec 31, 2018
Standard Deviation of Horizontal Wind Direction 1 May 23, 2006 Deactivated Dec 31, 2018
Outdoor Temperature 1 May 23, 2006 Deactivated Dec 31, 2018
Solar Radiation 1 May 23, 2006 Deactivated Dec 31, 2018
Atascocita C560
    Ozone 1 N Aug 4, 2004 Active
Wind Speed 1 Mar 28, 2006 Deactivated Dec 31, 2018
Resultant Wind Speed 1 Mar 28, 2006 Deactivated Dec 31, 2018
Resultant Wind Direction 1 Mar 28, 2006 Deactivated Dec 31, 2018
Maximum Wind Gust 1 Mar 28, 2006 Deactivated Dec 31, 2018
Standard Deviation of Horizontal Wind Direction 1 Mar 28, 2006 Deactivated Dec 31, 2018
Outdoor Temperature 1 Mar 28, 2006 Deactivated Dec 31, 2018
Solar Radiation 1 Mar 28, 2006 Deactivated Dec 31, 2018
Meyer Park C561
    Ozone 1 N Aug 6, 2004 Active
Bunker Hill Village C562
    Ozone 1 N Oct 13, 2004 Active
Huffman Wolf Road C563
    Ozone 1 N Sep 21, 2010 Active
Clear Brook High School C570
    Ozone 1 N Sep 12, 2003 Deactivated Dec 12, 2017
Wind Speed 1 May 13, 2008 Deactivated Aug 29, 2012
Resultant Wind Speed 1 May 13, 2008 Active
Resultant Wind Direction 1 May 13, 2008 Active
Maximum Wind Gust 1 May 13, 2008 Deactivated Aug 29, 2012
Standard Deviation of Horizontal Wind Direction 1 May 13, 2008 Deactivated Aug 29, 2012
Outdoor Temperature 1 May 13, 2008 Active
Dew Point Temperature 1 May 13, 2008 Deactivated Aug 29, 2012
Relative Humidity 1 May 13, 2008 Active
Solar Radiation 1 May 13, 2008 Deactivated Aug 29, 2012
Precipitation 1 May 13, 2008 Deactivated Aug 29, 2012
Clear Creek High School C571
    Ozone 1 N Oct 3, 2003 Deactivated Dec 12, 2017
Wind Speed 1 Oct 2, 2003 Deactivated Oct 3, 2003
Resultant Wind Speed 1 Feb 29, 2016 Active
Resultant Wind Direction 1 Feb 29, 2016 Active
Maximum Wind Gust 1 Oct 2, 2003 Deactivated Oct 3, 2003
Outdoor Temperature 1 Oct 2, 2003 Active
Relative Humidity 1 Apr 1, 2016 Active
Precipitation 1 Oct 2, 2003 Deactivated Oct 3, 2003
Clear Lake High School C572
    Ozone 1 N Sep 18, 2003 Active
Wind Speed 1 Jun 18, 2008 Deactivated Aug 29, 2012
Resultant Wind Speed 1 Jun 18, 2008 Active
Resultant Wind Direction 1 Jun 18, 2008 Active
Maximum Wind Gust 1 Jun 18, 2008 Deactivated Aug 29, 2012
Standard Deviation of Horizontal Wind Direction 1 Jun 18, 2008 Deactivated Aug 29, 2012
Outdoor Temperature 1 Jun 18, 2008 Active
Dew Point Temperature 1 Jun 18, 2008 Deactivated Aug 29, 2012
Internal Station Temperature 1 Sep 18, 2003 Deactivated Aug 29, 2012
Relative Humidity 1 Jun 18, 2008 Active
Solar Radiation 1 Jun 18, 2008 Deactivated Aug 29, 2012
Precipitation 1 Jun 18, 2008 Deactivated Aug 29, 2012
PM-2.5 (Local Conditions) Acceptable 3 Jun 18, 2008 Deactivated Aug 29, 2012
HRM-3 Haden Road C603/A114
    NOy 2 Jul 25, 2000 Deactivated Apr 27, 2005
Nitric Oxide 1 Oct 19, 1999 Active
Nitric Oxide 2 Jul 19, 2000 Deactivated Apr 27, 2005
Nitrogen Dioxide 1 N Oct 19, 1999 Active
Oxides of Nitrogen 1 Oct 19, 1999 Active
NOz 2 Jul 25, 2000 Deactivated Oct 17, 2000
Ozone 1 N Oct 20, 1999 Active
Wind Speed 1 Oct 20, 1999 Active
Resultant Wind Speed 1 Oct 20, 1999 Active
Resultant Wind Direction 1 Oct 20, 1999 Active
Maximum Wind Gust 1 Oct 20, 1999 Active
Standard Deviation of Horizontal Wind Direction 1 Oct 20, 1999 Active
Outdoor Temperature 1 Oct 20, 1999 Active
Net Radiation 1 May 6, 2003 Active
PM-2.5 (Local Conditions) 1 N May 16, 1998 Deactivated Jul 30, 1999
HRM-4 Sheldon Rd C604  Deactivated: Dec 6, 2001
    Nitric Oxide 1 Nov 30, 1999 Deactivated Dec 6, 2001
Nitrogen Dioxide 1 R Nov 30, 1999 Deactivated Dec 6, 2001
Oxides of Nitrogen 1 Nov 30, 1999 Deactivated Dec 6, 2001
Ozone 1 R Nov 30, 1999 Deactivated Dec 6, 2001
Wind Speed 1 Nov 29, 1999 Deactivated Dec 6, 2001
Resultant Wind Speed 1 Nov 29, 1999 Deactivated Dec 6, 2001
Resultant Wind Direction 1 Nov 29, 1999 Deactivated Dec 6, 2001
Maximum Wind Gust 1 Nov 29, 1999 Deactivated Dec 6, 2001
Standard Deviation of Horizontal Wind Direction 1 Nov 29, 1999 Deactivated Dec 6, 2001
Outdoor Temperature 1 Nov 29, 1999 Deactivated Dec 6, 2001
HRM-7 W Baytown C607   Deactivated: Dec 7, 2001
    Nitric Oxide 1 Dec 1, 1999 Deactivated Dec 7, 2001
Nitrogen Dioxide 1 R Dec 1, 1999 Deactivated Dec 7, 2001
Oxides of Nitrogen 1 Dec 1, 1999 Deactivated Dec 7, 2001
Ozone 1 R Nov 29, 1999 Deactivated Dec 7, 2001
Wind Speed 1 Nov 29, 1999 Deactivated Dec 7, 2001
Resultant Wind Speed 1 Nov 29, 1999 Deactivated Dec 7, 2001
Resultant Wind Direction 1 Nov 29, 1999 Deactivated Dec 7, 2001
Maximum Wind Gust 1 Nov 29, 1999 Deactivated Dec 7, 2001
Standard Deviation of Horizontal Wind Direction 1 Nov 29, 1999 Deactivated Dec 7, 2001
Outdoor Temperature 1 Nov 29, 1999 Deactivated Dec 7, 2001
HRM-8 LaPorte C608  Deactivated: Dec 5, 2001
    Nitric Oxide 1 Dec 1, 1999 Deactivated Dec 5, 2001
Nitrogen Dioxide 1 R Dec 1, 1999 Deactivated Dec 5, 2001
Oxides of Nitrogen 1 Dec 1, 1999 Deactivated Dec 5, 2001
Ozone 1 R Nov 30, 1999 Deactivated Dec 5, 2001
Ozone 2 R Nov 1, 2000 Deactivated Sep 27, 2000
Wind Speed 1 Nov 30, 1999 Deactivated Dec 5, 2001
Resultant Wind Speed 1 Nov 30, 1999 Deactivated Dec 5, 2001
Resultant Wind Direction 1 Nov 30, 1999 Deactivated Dec 5, 2001
Maximum Wind Gust 1 Nov 30, 1999 Deactivated Dec 5, 2001
Standard Deviation of Horizontal Wind Direction 1 Nov 30, 1999 Deactivated Dec 5, 2001
Outdoor Temperature 1 Nov 30, 1999 Deactivated Dec 5, 2001
HRM-10 Mont Belvieu C610  Deactivated: Dec 6, 2001
    Nitric Oxide 1 Nov 10, 1999 Deactivated Dec 6, 2001
Nitrogen Dioxide 1 R Nov 10, 1999 Deactivated Dec 6, 2001
Oxides of Nitrogen 1 Nov 10, 1999 Deactivated Dec 6, 2001
Ozone 1 R Nov 9, 1999 Deactivated Dec 6, 2001
Wind Speed 1 Nov 9, 1999 Deactivated Dec 6, 2001
Resultant Wind Speed 1 Nov 9, 1999 Deactivated Dec 6, 2001
Resultant Wind Direction 1 Nov 9, 1999 Deactivated Dec 6, 2001
Maximum Wind Gust 1 Nov 9, 1999 Deactivated Dec 6, 2001
Standard Deviation of Horizontal Wind Direction 1 Nov 9, 1999 Deactivated Dec 6, 2001
Outdoor Temperature 1 Nov 9, 1999 Deactivated Dec 6, 2001
HRM-11 E Baytown C611  Deactivated: Dec 5, 2001
    Nitric Oxide 1 Nov 24, 1999 Deactivated Dec 5, 2001
Nitrogen Dioxide 1 R Nov 24, 1999 Deactivated Dec 5, 2001
Oxides of Nitrogen 1 Nov 24, 1999 Deactivated Dec 5, 2001
Ozone 1 R Nov 11, 1999 Deactivated Dec 5, 2001
Wind Speed 1 Nov 10, 1999 Deactivated Dec 5, 2001
Resultant Wind Speed 1 Nov 10, 1999 Deactivated Dec 5, 2001
Resultant Wind Direction 1 Nov 10, 1999 Deactivated Dec 5, 2001
Maximum Wind Gust 1 Nov 10, 1999 Deactivated Dec 5, 2001
Standard Deviation of Horizontal Wind Direction 1 Nov 10, 1999 Deactivated Dec 5, 2001
Outdoor Temperature 1 Nov 10, 1999 Deactivated Dec 5, 2001
Wallisville Road C617
    Nitric Oxide 1 Jun 5, 2003 Active
Nitrogen Dioxide 1 N Jun 5, 2003 Active
Oxides of Nitrogen 1 Jun 5, 2003 Active
Ozone 1 N Jun 6, 2003 Active
Wind Speed 1 Jun 10, 2003 Active
Resultant Wind Speed 1 Jun 10, 2003 Active
Resultant Wind Direction 1 Jun 10, 2003 Active
Maximum Wind Gust 1 Jun 5, 2003 Active
Standard Deviation of Horizontal Wind Direction 1 Jun 10, 2003 Active
Outdoor Temperature 1 Jun 10, 2003 Active
Solar Radiation 1 Jun 5, 2003 Deactivated Jun 20, 2003
Net Radiation 1 Jun 5, 2003 Active
Danciger C618
    Nitric Oxide 1 Jun 25, 2003 Active
Nitrogen Dioxide 1 N Jun 25, 2003 Active
Oxides of Nitrogen 1 Jun 25, 2003 Active
Ozone 1 N Jun 30, 2003 Active
Wind Speed 1 Jun 6, 2003 Active
Resultant Wind Speed 1 Jun 6, 2003 Active
Resultant Wind Direction 1 Jun 6, 2003 Active
Maximum Wind Gust 1 Jun 6, 2003 Active
Standard Deviation of Horizontal Wind Direction 1 Jun 6, 2003 Active
Outdoor Temperature 1 Jun 6, 2003 Active
Net Radiation 1 Jun 6, 2003 Active
Mustang Bayou C619   Deactivated: Nov 16, 2015
    Nitric Oxide 1 Jun 15, 2003 Deactivated Dec 1, 2015
Nitrogen Dioxide 1 N Jun 25, 2003 Deactivated Dec 1, 2015
Oxides of Nitrogen 1 Jun 10, 2003 Deactivated Dec 1, 2015
Ozone 1 N Jun 14, 2003 Deactivated Dec 1, 2015
Wind Speed 1 Jun 10, 2003 Deactivated Dec 1, 2015
Resultant Wind Speed 1 Jun 10, 2003 Deactivated Dec 1, 2015
Resultant Wind Direction 1 Jun 10, 2003 Deactivated Dec 1, 2015
Maximum Wind Gust 1 Jun 10, 2003 Deactivated Dec 1, 2015
Standard Deviation of Horizontal Wind Direction 1 Jun 10, 2003 Deactivated Dec 1, 2015
Outdoor Temperature 1 Jun 10, 2003 Deactivated Dec 1, 2015
Net Radiation 1 Jun 10, 2003 Deactivated Dec 1, 2015
Texas City 34th St. C620
    Nitric Oxide 1 Jun 8, 2003 Active
Nitrogen Dioxide 1 N Jul 21, 2003 Active
Oxides of Nitrogen 1 Jun 8, 2003 Active
Ozone 1 N Jun 27, 2003 Active
Wind Speed 1 Jun 6, 2003 Active
Resultant Wind Speed 1 Jun 6, 2003 Active
Resultant Wind Direction 1 Jun 6, 2003 Active
Maximum Wind Gust 1 Jun 6, 2003 Active
Standard Deviation of Horizontal Wind Direction 1 Jun 6, 2003 Active
Outdoor Temperature 1 Jun 6, 2003 Active
Net Radiation 1 Jun 6, 2003 Active
Pasadena AAMS C672  Deactivated: Mar 3, 2009
    Hydrochloric Acid 1 Oct 10, 2006 Deactivated Mar 2, 2009
Cis/Trans-2-Butene 1 Mar 1, 2007 Deactivated Mar 2, 2009
Ethylene 1 Aug 2, 2006 Deactivated Mar 2, 2009
Propylene 1 Aug 2, 2006 Deactivated Mar 2, 2009
1,3 Butadiene 1 Aug 2, 2006 Deactivated Mar 2, 2009
Isoprene 1 Jan 15, 2007 Deactivated Mar 2, 2009
Methyl-Tert-Butyl Ether 1 Oct 10, 2006 Deactivated Mar 2, 2009
Formaldehyde 1 Aug 2, 2006 Deactivated Mar 2, 2009
Acetaldehyde 1 Aug 2, 2006 Deactivated Mar 2, 2009
Ethylene Oxide 1 Oct 10, 2006 Deactivated Mar 2, 2009
Ozone 1 N Oct 10, 2006 Deactivated Mar 2, 2009
Benzene 2 Jan 15, 2007 Deactivated Mar 2, 2009
Styrene 1 Jan 15, 2007 Deactivated Mar 2, 2009
Wind Speed 1 Jul 19, 2006 Deactivated Mar 2, 2009
Resultant Wind Speed 1 Jul 19, 2006 Deactivated Mar 2, 2009
Resultant Wind Direction 1 Jul 19, 2006 Deactivated Mar 2, 2009
Maximum Wind Gust 1 Jul 19, 2006 Deactivated Mar 2, 2009
Standard Deviation of Horizontal Wind Direction 1 Jul 19, 2006 Deactivated Mar 2, 2009
Outdoor Temperature 1 Jul 19, 2006 Deactivated Mar 2, 2009
Relative Humidity 1 Jul 19, 2006 Deactivated Mar 2, 2009
UH Moody Tower C695
    Carbon Monoxide 1 N May 5, 2010 Active
Ozone 1 N May 5, 2010 Active
Resultant Wind Speed 1 May 5, 2010 Active
Resultant Wind Direction 1 May 5, 2010 Active
Outdoor Temperature 1 May 5, 2010 Active
Relative Humidity 1 May 5, 2010 Active
Barometric Pressure 1 May 5, 2010 Active
Precipitation 1 May 5, 2010 Active
U of H-Sugarland C696
    Carbon Monoxide 1 N Oct 7, 2011 Deactivated Dec 15, 2017
Ozone 1 N Feb 26, 2009 Deactivated Dec 15, 2017
Wind Speed 1 Mar 1, 2009 Deactivated Mar 4, 2009
Resultant Wind Speed 1 Feb 25, 2009 Active
Resultant Wind Direction 1 Feb 25, 2009 Active
Outdoor Temperature 1 Feb 25, 2009 Active
Relative Humidity 1 Feb 25, 2009 Active
Barometric Pressure 1 Feb 25, 2009 Active
Precipitation 1 Feb 25, 2009 Active
UH Coastal Center C697
    Carbon Monoxide 1 N Oct 6, 2011 Deactivated Dec 15, 2017
Ozone 1 N Apr 8, 2010 Deactivated Dec 15, 2017
Resultant Wind Speed 1 Apr 8, 2010 Active
Resultant Wind Direction 1 Apr 8, 2010 Active
Outdoor Temperature 1 Apr 8, 2010 Active
Relative Humidity 1 Apr 8, 2010 Active
Barometric Pressure 1 Apr 8, 2010 Active
Precipitation 1 Apr 8, 2010 Active
PM-2.5 (Local Conditions) Acceptable 3 Jun 3, 2014 Deactivated Dec 15, 2017
UH WG Jones Forest C698
    Carbon Monoxide 1 N Oct 6, 2011 Active
Ozone 1 N Apr 6, 2010 Active
Resultant Wind Speed 1 Apr 6, 2010 Active
Resultant Wind Direction 1 Apr 6, 2010 Active
Outdoor Temperature 1 Apr 6, 2010 Active
Relative Humidity 1 Apr 6, 2010 Active
Barometric Pressure 1 Apr 6, 2010 Active
Precipitation 1 Apr 6, 2010 Active
UH West Liberty C699
    Carbon Monoxide 1 N Oct 6, 2011 Active
Nitric Oxide 1 Nov 6, 2015 Active
Nitrogen Dioxide 1 N Nov 6, 2015 Active
Ozone 1 N May 31, 2010 Active
Resultant Wind Speed 1 May 26, 2010 Active
Resultant Wind Direction 1 May 26, 2010 Active
Outdoor Temperature 1 May 26, 2010 Active
Relative Humidity 1 May 26, 2010 Active
Barometric Pressure 1 May 26, 2010 Active
Precipitation 1 May 26, 2010 Active
PM-2.5 (Local Conditions) Acceptable 3 Dec 31, 2015 Active
Freeport South Avenue I C1012
    Sulfur Dioxide 1 N May 25, 2011 Active
Wind Speed 1 May 25, 2011 Active
Resultant Wind Speed 1 May 25, 2011 Active
Resultant Wind Direction 1 May 25, 2011 Active
Maximum Wind Gust 1 May 25, 2011 Active
Standard Deviation of Horizontal Wind Direction 1 May 25, 2011 Active
Outdoor Temperature 1 May 25, 2011 Active
Lynchburg Ferry C1015/A165
    Nitric Oxide 1 Apr 25, 2003 Active
Nitrogen Dioxide 1 R Apr 25, 2003 Active
Oxides of Nitrogen 1 Apr 25, 2003 Active
Total Non-Methane Organic Compounds 1 Apr 24, 2003 Deactivated Dec 11, 2008
Methane 1 Apr 24, 2003 Deactivated Dec 11, 2008
Ozone 1 R Apr 25, 2003 Active
Wind Speed 1 Apr 24, 2003 Active
Resultant Wind Speed 1 Apr 24, 2003 Active
Resultant Wind Direction 1 Apr 24, 2003 Active
Maximum Wind Gust 1 Apr 24, 2003 Active
Standard Deviation of Horizontal Wind Direction 1 Apr 24, 2003 Active
Outdoor Temperature 1 Apr 24, 2003 Active
Solar Radiation 1 May 22, 2003 Active
Net Radiation 1 Jun 17, 2003 Deactivated Dec 31, 2014
Lake Jackson C1016
    Nitric Oxide 1 Jun 12, 2003 Active
Nitrogen Dioxide 1 R Jun 12, 2003 Active
Oxides of Nitrogen 1 Jun 12, 2003 Active
Ozone 1 R Jun 11, 2003 Active
Wind Speed 1 Jun 11, 2003 Active
Resultant Wind Speed 1 Jun 11, 2003 Active
Resultant Wind Direction 1 Jun 11, 2003 Active
Maximum Wind Gust 1 Jun 11, 2003 Active
Standard Deviation of Horizontal Wind Direction 1 Jun 11, 2003 Active
Outdoor Temperature 1 Jun 11, 2003 Active
Solar Radiation 1 Jun 11, 2003 Active
Net Radiation 1 Jun 24, 2003 Deactivated Aug 17, 2015
PM-2.5 (Local Conditions) Acceptable 3 Sep 23, 2008 Deactivated Dec 1, 2008
Baytown Garth C1017
    Sulfur Dioxide 1 R Jun 5, 2012 Active
Ozone 1 R Jun 6, 2012 Active
Wind Speed 1 Jun 6, 2012 Active
Resultant Wind Speed 1 Jun 6, 2012 Active
Resultant Wind Direction 1 Jun 6, 2012 Active
Maximum Wind Gust 1 Jun 6, 2012 Active
Standard Deviation of Horizontal Wind Direction 1 Jun 6, 2012 Active
Outdoor Temperature 1 Jun 6, 2012 Active
Solar Radiation 1 Jun 6, 2012 Active
Cesar Chavez C1020/175
    Wind Speed 1 May 12, 2004 Active
Resultant Wind Speed 1 May 12, 2004 Active
Resultant Wind Direction 1 May 12, 2004 Active
Maximum Wind Gust 1 May 12, 2004 Active
Standard Deviation of Horizontal Wind Direction 1 May 12, 2004 Active
Outdoor Temperature 1 May 12, 2004 Active
Texas City Ball Park A147/C1022
    Sulfur Dioxide 1 R Feb 19, 2004 Active
Hydrogen Sulfide 1 N Feb 19, 2004 Active
Wind Speed 1 Apr 29, 2000 Active
Resultant Wind Speed 1 Apr 29, 2000 Active
Resultant Wind Direction 1 Apr 29, 2000 Active
Maximum Wind Gust 1 Apr 29, 2000 Active
Standard Deviation of Horizontal Wind Direction 1 Apr 29, 2000 Active
Outdoor Temperature 1 Apr 29, 2000 Active
Manchester C1029/A307/E307
    Total Non-Methane Organic Compounds 1 May 26, 2005 Active
Methane 1 May 26, 2005 Active
Wind Speed 1 May 26, 2005 Active
Resultant Wind Speed 1 May 26, 2005 Active
Resultant Wind Direction 1 May 26, 2005 Active
Maximum Wind Gust 1 May 26, 2005 Active
Standard Deviation of Horizontal Wind Direction 1 May 26, 2005 Active
Outdoor Temperature 1 May 26, 2005 Active
Channelview North C1030/A309  Deactivated: Oct 2, 2007
    Wind Speed 1 Dec 8, 2005 Deactivated Oct 2, 2007
Resultant Wind Speed 1 Dec 15, 2005 Deactivated Oct 2, 2007
Resultant Wind Direction 1 Dec 15, 2005 Deactivated Oct 2, 2007
Maximum Wind Gust 1 Dec 8, 2005 Deactivated Oct 2, 2007
Standard Deviation of Horizontal Wind Direction 1 Dec 15, 2005 Deactivated Oct 2, 2007
Outdoor Temperature 1 Dec 8, 2005 Deactivated Oct 2, 2007
Galveston 99th St. C1034/A320/X183
    NOy 2 Mar 22, 2007 Deactivated Aug 23, 2012
Nitric Oxide 1 Mar 21, 2007 Active
Nitric Oxide 2 Mar 22, 2007 Deactivated Aug 23, 2012
Nitrogen Dioxide 1 R Mar 21, 2007 Active
Oxides of Nitrogen 1 Mar 21, 2007 Active
Ozone 1 R Mar 20, 2007 Active
Wind Speed 1 Mar 21, 2007 Active
Resultant Wind Speed 1 Mar 21, 2007 Active
Resultant Wind Direction 1 Mar 21, 2007 Active
Maximum Wind Gust 1 Mar 20, 2007 Active
Standard Deviation of Horizontal Wind Direction 1 Mar 21, 2007 Active
Outdoor Temperature 1 Mar 20, 2007 Active
Dew Point Temperature 1 Mar 20, 2007 Active
Relative Humidity 1 Mar 20, 2007 Active
Solar Radiation 1 Mar 20, 2007 Active
PM-2.5 (Local Conditions) 2 R Apr 15, 2019 Active
PM-2.5 (Local Conditions) Acceptable 3 Mar 21, 2007 Deactivated Jan 22, 2019
Jacinto Port C1036/A318
    Wind Speed 1 Jul 19, 2006 Active
Resultant Wind Speed 1 Jul 19, 2006 Active
Resultant Wind Direction 1 Jul 19, 2006 Active
Maximum Wind Gust 1 Jul 19, 2006 Active
Standard Deviation of Horizontal Wind Direction 1 Jul 19, 2006 Active
Outdoor Temperature 1 Jul 19, 2006 Active
Pasadena North C1049/A330
    Total Non-Methane Organic Compounds 1 Jun 30, 2008 Deactivated Feb 21, 2018
Methane 1 Jun 30, 2008 Deactivated Feb 21, 2018
Wind Speed 1 Jun 30, 2008 Active
Resultant Wind Speed 1 Jun 30, 2008 Active
Resultant Wind Direction 1 Jun 30, 2008 Active
Maximum Wind Gust 1 Jun 30, 2008 Active
Standard Deviation of Horizontal Wind Direction 1 Jun 30, 2008 Active
Outdoor Temperature 1 Jul 1, 2008 Active
Houston North Loop C1052
    Carbon Monoxide 1 R Apr 13, 2015 Active
Nitric Oxide 1 Apr 13, 2015 Active
Nitrogen Dioxide 1 R Apr 13, 2015 Active
Oxides of Nitrogen 1 Apr 13, 2015 Active
Wind Speed 1 Apr 16, 2015 Active
Resultant Wind Speed 1 Apr 16, 2015 Active
Resultant Wind Direction 1 Apr 16, 2015 Active
Maximum Wind Gust 1 Apr 9, 2015 Active
Standard Deviation of Horizontal Wind Direction 1 Apr 16, 2015 Active
Outdoor Temperature 1 Apr 9, 2015 Active
Houston Hartwick C1054  Deactivated: Apr 13, 2017
    PM-2.5 (Local Conditions) 1 N Nov 30, 2016 Deactivated Apr 13, 2017
Houston Southwest Freeway C1066
    Nitric Oxide 1 Jan 15, 2014 Active
Nitrogen Dioxide 1 R Jan 15, 2014 Active
Oxides of Nitrogen 1 Jan 15, 2014 Active
Wind Speed 1 Jan 16, 2014 Active
Resultant Wind Speed 1 Jan 16, 2014 Active
Resultant Wind Direction 1 Jan 16, 2014 Active
Maximum Wind Gust 1 Jan 16, 2014 Active
Standard Deviation of Horizontal Wind Direction 1 Jan 16, 2014 Active
Outdoor Temperature 1 Jan 16, 2014 Active
UH Smith Point C1606
    Nitric Oxide 1 Apr 12, 2016 Active
Nitrogen Dioxide 1 N Apr 12, 2016 Active
Ozone 1 N Apr 12, 2016 Active
Oyster Creek C1607
    Carbon Monoxide 1 N Jan 1, 2017 Active
Sulfur Dioxide 1 N Jan 1, 2017 Active
Hydrogen Sulfide 1 N Jan 1, 2017 Active
Nitric Oxide 1 Jan 1, 2017 Active
Nitrogen Dioxide 1 N Jan 1, 2017 Active
Oxides of Nitrogen 1 Jan 1, 2017 Active
Ozone 1 N Jan 1, 2017 Active
Wind Speed 1 Dec 29, 2016 Active
Resultant Wind Speed 1 Dec 29, 2016 Active
Resultant Wind Direction 1 Dec 29, 2016 Active
Maximum Wind Gust 1 Dec 29, 2016 Active
Standard Deviation of Horizontal Wind Direction 1 Dec 29, 2016 Active
Outdoor Temperature 1 Dec 29, 2016 Active
PM-10 (Standard Conditions) 1 N Dec 28, 2016 Active
PM-2.5 (Local Conditions) 1 N Dec 29, 2016 Active
Galveston C2003  Deactivated: Nov 19, 2008
    Wind Speed 1 Sep 22, 2008 Deactivated Nov 19, 2008
Resultant Wind Speed 1 Sep 22, 2008 Deactivated Nov 19, 2008
Resultant Wind Direction 1 Sep 22, 2008 Deactivated Nov 19, 2008
Maximum Wind Gust 1 Sep 22, 2008 Deactivated Nov 19, 2008
Standard Deviation of Horizontal Wind Direction 1 Sep 22, 2008 Deactivated Nov 19, 2008
Outdoor Temperature 1 Sep 22, 2008 Deactivated Nov 19, 2008
PM-2.5 (Local Conditions) Acceptable 3 Sep 22, 2008 Deactivated Nov 19, 2008
Galveston Airport KGLS C5005
    Extinction Coefficient 1 Jan 22, 2003 Active
Day/Night Flag 1 Jan 22, 2003 Active
Present Weather 1 Jan 22, 2003 Active
Present Weather Obscuration 1 Jan 22, 2003 Active
Wind Speed 1 Jan 22, 2003 Active
Resultant Wind Speed 1 Jan 22, 2003 Active
Resultant Wind Direction 1 Jan 22, 2003 Active
Maximum Wind Gust 1 Jan 22, 2003 Active
Standard Deviation of Horizontal Wind Direction 1 Jan 22, 2003 Active
Outdoor Temperature 1 Jan 22, 2003 Active
Dew Point Temperature 1 Jan 22, 2003 Active
Relative Humidity 1 Jan 22, 2003 Active
Visibility 1 Jan 22, 2003 Active
Precipitation 1 Jan 22, 2003 Active
Conroe Airport KCXO C5006
    Extinction Coefficient 1 Jan 23, 2003 Active
Day/Night Flag 1 Jan 23, 2003 Active
Present Weather 1 Jan 23, 2003 Active
Present Weather Obscuration 1 Jan 23, 2003 Active
Wind Speed 1 Jan 23, 2003 Active
Resultant Wind Speed 1 Jan 23, 2003 Active
Resultant Wind Direction 1 Jan 23, 2003 Active
Maximum Wind Gust 1 Jan 23, 2003 Active
Standard Deviation of Horizontal Wind Direction 1 Jan 23, 2003 Active
Outdoor Temperature 1 Jan 23, 2003 Active
Dew Point Temperature 1 Jan 23, 2003 Active
Relative Humidity 1 Jan 23, 2003 Active
Visibility 1 Jan 23, 2003 Active
Precipitation 1 Jan 23, 2003 Active
Huntsville KUTS C5012
    Extinction Coefficient 1 Sep 2, 2005 Active
Day/Night Flag 1 Sep 2, 2005 Active
Present Weather 1 Sep 2, 2005 Active
Present Weather Obscuration 1 Sep 2, 2005 Active
Wind Speed 1 Sep 2, 2005 Active
Resultant Wind Speed 1 Sep 2, 2005 Active
Resultant Wind Direction 1 Sep 2, 2005 Active
Maximum Wind Gust 1 Sep 2, 2005 Active
Standard Deviation of Horizontal Wind Direction 1 Sep 2, 2005 Active
Outdoor Temperature 1 Sep 2, 2005 Active
Dew Point Temperature 1 Sep 2, 2005 Active
Relative Humidity 1 Sep 2, 2005 Active
Visibility 1 Sep 2, 2005 Active
Precipitation 1 Sep 2, 2005 Active
 R - Data from this instrument meets EPA quality assurance criteria for regulatory purposes.
 N - Data from this instrument does not meet EPA quality assurance criteria and cannot be used for regulatory purposes.

PLEASE NOTE:  This data has not been verified by the TCEQ and may change. This is the most current data, but it is not official until it has been certified by our technical staff. Data is collected from TCEQ ambient monitoring sites and may include data collected by other outside agencies. This data is updated hourly. All times shown are in local standard time unless otherwise indicated.

Following EPA reporting guidelines, negative values may be displayed in our hourly criteria air quality data, down to the negative of the EPA listed Method Detection Limit (MDL) for the particular instrument that made the measurements. The reported concentrations can be negative due to zero drift in the electronic instrument output, data logger channel, or calibration adjustments to the data. Prior to 1/1/2013, slightly negative values were automatically set to zero.