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San Antonio Region Monitor Summary

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Parameter Monitored POC First Valid Data Monitor Status
San Antonio North C7  Deactivated: Aug 11, 1998
    Carbon Monoxide 1 R Oct 20, 1996 Deactivated Jan 15, 1997
Nitric Oxide 1 Oct 12, 1996 Deactivated Aug 11, 1998
Nitrogen Dioxide 1 R Oct 12, 1996 Deactivated Aug 11, 1998
Oxides of Nitrogen 1 Oct 12, 1996 Deactivated Aug 11, 1998
Ozone 2 R Oct 10, 1996 Deactivated Aug 11, 1998
Wind Speed 1 Oct 3, 1996 Deactivated Aug 11, 1998
Resultant Wind Speed 1 Oct 3, 1996 Deactivated Aug 11, 1998
Resultant Wind Direction 1 Oct 3, 1996 Deactivated Aug 11, 1998
Maximum Wind Gust 1 Oct 3, 1996 Deactivated Aug 11, 1998
Standard Deviation of Horizontal Wind Direction 1 Oct 3, 1996 Deactivated Aug 11, 1998
Outdoor Temperature 1 Oct 3, 1996 Deactivated Aug 11, 1998
Solar Radiation 1 Apr 29, 1997 Deactivated Aug 11, 1998
San Antonio Northwest C23
    Nitric Oxide 1 Oct 17, 2012 Active
Nitrogen Dioxide 1 R Oct 17, 2012 Active
Oxides of Nitrogen 1 Oct 17, 2012 Active
Ozone 2 R Sep 18, 1996 Active
Wind Speed 1 Sep 20, 1996 Active
Resultant Wind Speed 1 Sep 20, 1996 Active
Resultant Wind Direction 1 Sep 20, 1996 Active
Maximum Wind Gust 1 Sep 18, 1996 Active
Standard Deviation of Horizontal Wind Direction 1 Sep 20, 1996 Active
Outdoor Temperature 1 Sep 18, 1996 Active
PM-10 (Local Conditions) 1 May 19, 1998 Deactivated Sep 18, 1998
PM-2.5 (Local Conditions) 2 R Nov 8, 2018 Active
PM-2.5 (Local Conditions) Acceptable 3 Jan 4, 2007 Deactivated Nov 5, 2018
San Antonio Downtown C27  Deactivated: Oct 6, 2010
    Carbon Monoxide 1 R Nov 22, 1996 Deactivated Oct 6, 2010
Nitric Oxide 1 Jan 6, 1997 Deactivated Oct 6, 2010
Nitrogen Dioxide 1 R Jan 6, 1997 Deactivated Oct 6, 2010
Oxides of Nitrogen 1 Jan 6, 1997 Deactivated Oct 6, 2010
Camp Bullis C58
    Nitric Oxide 1 Aug 14, 1998 Deactivated Oct 17, 2012
Nitrogen Dioxide 1 R Aug 14, 1998 Deactivated Oct 17, 2012
Oxides of Nitrogen 1 Aug 14, 1998 Deactivated Oct 17, 2012
Ozone 1 R Aug 13, 1998 Active
Wind Speed 1 Aug 12, 1998 Active
Resultant Wind Speed 1 Aug 12, 1998 Active
Resultant Wind Direction 1 Aug 12, 1998 Active
Maximum Wind Gust 1 Aug 12, 1998 Active
Standard Deviation of Horizontal Wind Direction 1 Aug 12, 1998 Active
Outdoor Temperature 1 Sep 4, 1998 Active
Visibility 1 Oct 19, 2000 Deactivated Dec 13, 2005
Solar Radiation 1 Aug 12, 1998 Active
Calaveras Lake C59
    Total Suspended Particulate (Lcl) 1 Oct 13, 2004 Active
Sulfur Dioxide 1 R Dec 17, 2012 Active
Nitric Oxide 1 May 18, 1998 Active
Nitrogen Dioxide 1 R May 18, 1998 Active
Oxides of Nitrogen 1 May 18, 1998 Active
Ozone 1 R May 14, 1998 Active
Wind Speed 1 May 14, 1998 Active
Resultant Wind Speed 1 May 14, 1998 Active
Resultant Wind Direction 1 May 14, 1998 Active
Maximum Wind Gust 1 May 14, 1998 Active
Standard Deviation of Horizontal Wind Direction 1 May 14, 1998 Active
Outdoor Temperature 1 May 14, 1998 Active
PM-2.5 (Local Conditions) 2 R Nov 8, 2018 Active
PM-2.5 (Local Conditions) 3 N Dec 1, 1999 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Deactivated Nov 6, 2018
San Antonio Seale A140
    Wind Speed 1 Jan 1, 1996 Active
Resultant Wind Speed 1 Jan 1, 1996 Active
Resultant Wind Direction 1 Jan 1, 1996 Active
Maximum Wind Gust 1 Apr 13, 1998 Active
Standard Deviation of Horizontal Wind Direction 1 Jan 1, 1996 Active
Outdoor Temperature 1 Jan 1, 1996 Active
Relative Humidity 1 Jan 1, 1996 Deactivated Mar 21, 2000
Selma C301
    PM-10 (Standard Conditions) 4 N Feb 12, 2003 Deactivated Apr 4, 2013
PM-2.5 (Local Conditions) 3 N Dec 10, 1999 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Deactivated Dec 29, 2017
Elm Creek Elementary C501
    Ozone 1 N Jun 20, 2002 Active
Wind Speed 1 Jun 17, 2002 Active
Resultant Wind Speed 1 Jun 18, 2002 Active
Resultant Wind Direction 1 Jun 18, 2002 Active
Maximum Wind Gust 1 Jun 17, 2002 Active
Standard Deviation of Horizontal Wind Direction 1 Jun 18, 2002 Active
Outdoor Temperature 1 Jun 17, 2002 Active
Precipitation 1 Jun 17, 2002 Active
Fair Oaks Ranch C502
    Ozone 1 N Jun 28, 2002 Active
Wind Speed 1 Jul 18, 2002 Active
Resultant Wind Speed 1 Jul 18, 2002 Active
Resultant Wind Direction 1 Jul 18, 2002 Active
Maximum Wind Gust 1 Jul 18, 2002 Active
Standard Deviation of Horizontal Wind Direction 1 Jul 18, 2002 Active
Outdoor Temperature 1 Jul 23, 2002 Active
Precipitation 1 Jul 18, 2002 Active
Bulverde Elementary C503
    Ozone 1 N Aug 27, 2002 Active
Wind Speed 1 Aug 26, 2002 Deactivated Nov 4, 2013
Resultant Wind Speed 1 Aug 26, 2002 Deactivated Nov 4, 2013
Resultant Wind Direction 1 Aug 26, 2002 Deactivated Nov 4, 2013
Maximum Wind Gust 1 Aug 26, 2002 Deactivated Nov 4, 2013
Standard Deviation of Horizontal Wind Direction 1 Aug 26, 2002 Deactivated Nov 4, 2013
Outdoor Temperature 1 Aug 26, 2002 Deactivated Nov 4, 2013
Precipitation 1 Aug 26, 2002 Deactivated Nov 4, 2013
New Braunfels Airport C504
    Ozone 1 N Aug 30, 2002 Active
City of Garden Ridge C505
    Ozone 1 N Mar 26, 2003 Active
Seguin Outdoor Learning Center C506
    Ozone 1 N Mar 26, 2003 Active
Heritage Middle School C622
    Total Suspended Particulate (Lcl) 1 Jul 29, 2004 Active
Carbon Monoxide 1 N Jul 29, 2004 Deactivated Apr 5, 2016
Sulfur Dioxide 1 N Jul 29, 2004 Deactivated Apr 5, 2016
Nitric Oxide 1 Jul 30, 2004 Deactivated Apr 5, 2016
Nitrogen Dioxide 1 N Jul 30, 2004 Deactivated Apr 5, 2016
Oxides of Nitrogen 1 Jul 30, 2004 Deactivated Apr 5, 2016
Ozone 1 N Jul 29, 2004 Active
Wind Speed 1 Jul 29, 2004 Active
Resultant Wind Speed 1 Jul 29, 2004 Active
Resultant Wind Direction 1 Jul 29, 2004 Active
Maximum Wind Gust 1 Jul 29, 2004 Active
Standard Deviation of Horizontal Wind Direction 1 Jul 29, 2004 Active
Outdoor Temperature 1 Jul 29, 2004 Active
Precipitation 1 Jul 29, 2004 Active
PM-2.5 (Local Conditions) 3 N Jul 29, 2004 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Active
Gardner Rd. Gas Sub-Station C623
    Total Suspended Particulate (Lcl) 1 Jun 28, 2005 Active
Gate 9A CPS C625
    Total Suspended Particulate (Lcl) 1 Jun 30, 2005 Active
Gate 58 CPS C626
    Total Suspended Particulate (Lcl) 1 Jun 29, 2005 Active
Palo Alto C676
    Wind Speed 1 Aug 1, 2006 Active
Resultant Wind Speed 1 Aug 1, 2006 Active
Resultant Wind Direction 1 Aug 1, 2006 Active
Maximum Wind Gust 1 Aug 1, 2006 Active
Standard Deviation of Horizontal Wind Direction 1 Aug 1, 2006 Active
Outdoor Temperature 1 Aug 1, 2006 Active
PM-2.5 (Local Conditions) 3 N Aug 1, 2006 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Active
Old Highway 90 C677/A319
    Wind Speed 1 Oct 10, 2006 Active
Resultant Wind Speed 1 Oct 11, 2006 Active
Resultant Wind Direction 1 Oct 11, 2006 Active
Maximum Wind Gust 1 Oct 9, 2006 Active
Standard Deviation of Horizontal Wind Direction 1 Oct 11, 2006 Active
Outdoor Temperature 1 Oct 9, 2006 Active
PM-2.5 (Local Conditions) 3 N Oct 9, 2006 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Active
CPS Pecan Valley C678
    Carbon Monoxide 1 N Mar 29, 1999 Deactivated Apr 5, 2016
Sulfur Dioxide 1 N Mar 27, 1999 Deactivated Apr 5, 2016
Nitric Oxide 1 Mar 27, 1999 Deactivated Apr 5, 2016
Nitrogen Dioxide 1 N Mar 27, 1999 Deactivated Apr 5, 2016
Oxides of Nitrogen 1 Mar 27, 1999 Deactivated Apr 5, 2016
Ozone 1 N Mar 29, 1999 Active
Wind Speed 1 Mar 11, 1999 Active
Resultant Wind Speed 1 Mar 11, 1999 Active
Resultant Wind Direction 1 Mar 11, 1999 Active
Maximum Wind Gust 1 Mar 11, 1999 Active
Standard Deviation of Horizontal Wind Direction 1 Mar 11, 1999 Active
Outdoor Temperature 1 Mar 11, 1999 Active
Precipitation 1 Apr 16, 1999 Active
PM-2.5 (Local Conditions) 3 N Mar 25, 2002 Deactivated Jan 1, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 1, 2007 Deactivated Nov 23, 2015
Floresville Hospital Blvd C1038
    Nitric Oxide 1 Aug 9, 2013 Active
Nitrogen Dioxide 1 N Aug 9, 2013 Active
Oxides of Nitrogen 1 Aug 9, 2013 Active
Wind Speed 1 Aug 1, 2013 Active
Resultant Wind Speed 1 Aug 1, 2013 Active
Resultant Wind Direction 1 Aug 1, 2013 Active
Maximum Wind Gust 1 Aug 1, 2013 Active
Standard Deviation of Horizontal Wind Direction 1 Aug 1, 2013 Active
Outdoor Temperature 1 Aug 1, 2013 Active
TCEQ Mobile PM Monitoring C1040  Deactivated: Apr 19, 2007
    Wind Speed 1 Jan 10, 2007 Deactivated Apr 18, 2007
Resultant Wind Speed 1 Jan 10, 2007 Deactivated Apr 18, 2007
Resultant Wind Direction 1 Jan 10, 2007 Deactivated Apr 18, 2007
Maximum Wind Gust 1 Jan 10, 2007 Deactivated Apr 18, 2007
Standard Deviation of Horizontal Wind Direction 1 Jan 10, 2007 Deactivated Apr 18, 2007
Outdoor Temperature 1 Jan 10, 2007 Deactivated Apr 18, 2007
Dew Point Temperature 1 Jan 10, 2007 Deactivated Apr 18, 2007
Relative Humidity 1 Jan 10, 2007 Deactivated Apr 18, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 10, 2007 Deactivated Apr 18, 2007
TCEQ Mobile PM Monitoring 2 C1041  Deactivated: Apr 19, 2007
    Wind Speed 1 Jan 30, 2007 Deactivated Apr 18, 2007
Resultant Wind Speed 1 Jan 30, 2007 Deactivated Apr 18, 2007
Resultant Wind Direction 1 Jan 30, 2007 Deactivated Apr 18, 2007
Maximum Wind Gust 1 Jan 30, 2007 Deactivated Apr 18, 2007
Standard Deviation of Horizontal Wind Direction 1 Jan 30, 2007 Deactivated Apr 18, 2007
Outdoor Temperature 1 Jan 30, 2007 Deactivated Apr 18, 2007
PM-2.5 (Local Conditions) Acceptable 3 Jan 30, 2007 Deactivated Apr 18, 2007
TCEQ Mobile PM Monitoring 3 C1042  Deactivated: Apr 19, 2007
    Wind Speed 1 Feb 13, 2007 Deactivated Apr 18, 2007
Resultant Wind Speed 1 Feb 13, 2007 Deactivated Apr 18, 2007
Resultant Wind Direction 1 Feb 13, 2007 Deactivated Apr 18, 2007
Maximum Wind Gust 1 Feb 13, 2007 Deactivated Apr 18, 2007
Standard Deviation of Horizontal Wind Direction 1 Feb 13, 2007 Deactivated Apr 18, 2007
Outdoor Temperature 1 Feb 13, 2007 Deactivated Apr 18, 2007
PM-2.5 (Local Conditions) Acceptable 3 Feb 13, 2007 Deactivated Apr 18, 2007
San Antonio IH 35 C1069
    Carbon Monoxide 1 R Dec 9, 2016 Active
Nitric Oxide 1 Jan 8, 2014 Active
Nitrogen Dioxide 1 R Jan 8, 2014 Active
Oxides of Nitrogen 1 Jan 8, 2014 Active
Wind Speed 1 Jan 8, 2014 Active
Resultant Wind Speed 1 Jan 8, 2014 Active
Resultant Wind Direction 1 Jan 8, 2014 Active
Maximum Wind Gust 1 Jan 8, 2014 Active
Standard Deviation of Horizontal Wind Direction 1 Jan 8, 2014 Active
Outdoor Temperature 1 Jan 8, 2014 Active
PM-2.5 (Local Conditions) 2 R Nov 8, 2018 Active
Karnes County C1070
    Hydrogen Sulfide 1 N Dec 17, 2014 Active
Nitric Oxide 1 Dec 16, 2014 Active
Nitrogen Dioxide 1 N Dec 16, 2014 Active
Oxides of Nitrogen 1 Dec 16, 2014 Active
Wind Speed 1 Dec 16, 2014 Active
Resultant Wind Speed 1 Dec 16, 2014 Active
Resultant Wind Direction 1 Dec 16, 2014 Active
Maximum Wind Gust 1 Dec 16, 2014 Active
Standard Deviation of Horizontal Wind Direction 1 Dec 16, 2014 Active
Outdoor Temperature 1 Dec 16, 2014 Active
San Antonio Gardner Road C1080
    Sulfur Dioxide 1 R Oct 20, 2016 Active
Wind Speed 1 Oct 20, 2016 Active
Resultant Wind Speed 1 Oct 20, 2016 Active
Resultant Wind Direction 1 Oct 20, 2016 Active
Maximum Wind Gust 1 Oct 20, 2016 Active
Standard Deviation of Horizontal Wind Direction 1 Oct 20, 2016 Active
Outdoor Temperature 1 Oct 20, 2016 Active
Calaveras Lake Park C1609
    Total Suspended Particulate (Lcl) 1 Aug 9, 2017 Active
Government Canyon C1610
    Ozone 1 N Aug 31, 2017 Active
Wind Speed 1 Feb 12, 2019 Deactivated Nov 16, 2017
Resultant Wind Speed 1 Feb 12, 2019 Deactivated Nov 16, 2017
Resultant Wind Direction 1 Feb 12, 2019 Deactivated Nov 16, 2017
Maximum Wind Gust 1 Feb 12, 2019 Deactivated Nov 16, 2017
Standard Deviation of Horizontal Wind Direction 1 Feb 12, 2019 Deactivated Nov 16, 2017
New Braunfels Airport KBAZ C5004
    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
 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.