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Peak Daily One-Hour Ozone Averages for July 2014

The table below lists the peak daily one-hour ozone concentrations measured in July 2014 in each community where the TCEQ measures ozone. Concentrations are color-highlighted based on the EPA-defined Air Quality Index colors. (See Interpreting the AQI.) All ozone measurements are in parts per billion, and are truncated to an integer number.

The values that go into this table are calculated at 3:30 am each morning. Therefore, the current day will almost always have very low hourly averages that are not truly representative of local conditions for the day. Because of this, the report does not display the current day's data.

Use the selection boxes below to customize this report. You may select a different month, a different year, a different report format, and whether or not to include time on the report. Click on the Generate Report button once you have made your selections.

Month:Year:Report Format: Include time:
Include time
Highlight using AQI colors
AreaMonitoring SitePOCJuly 2014
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 24073596032NA38386244
Keller C17241665162505141456546
Frisco C31/C680154555064585658648253
Midlothian OFW C52/A137135565551464346434538
Denton Airport South C56/A163/X157153584774585746608451
Arlington Municipal Airport C61136586253454140394136
Dallas North No.2 C63/C679146545056525344497443
Rockwall Heath C691NA504856494543426440
Grapevine Fairway C70/A301/X182144625268545048537943
Kaufman C71/A304/X071144514647494335354238
Granbury C73/C681140556253524036353646
Eagle Mountain Lake C75 135594457474241355438
Parker County C76133414944463637334141
Cleburne Airport C77/C682141586454524048434950
Dallas Hinton St. C401/C60/AH161 341555456524845416842
Dallas Executive Airport C4021345458505141NA413836
Greenville C1006/A198144494652464537414636
Pilot Point C1032159534962606158638264
Italy C1044/A323134415155483846384233
Corsicana Airport C1051135355347524337363739
AreaMonitoring SitePOCJuly 2014
Longview C19/A127/C644222474753745130275229
Tyler Airport Relocated C82128375367444941414236
Karnack C85/AFHP303140404238517047526160
AreaMonitoring SitePOCJuly 2014
El Paso-Juarez
El Paso UTEP C12/A125/X151244525046584667605560
Ascarate Park SE C37/A332/A172/X159140464336443955914645
Chamizal C41/AH126 145454341514360534853
Socorro Hueco C49/F312145474641473952534945
Skyline Park C72146524544554361575451
BRAVO Big Bend C67/C316/C656/C6913 N45393633384538363742
Ivanhoe C414143474240473944403738
Cd Juarez Delphi C6631 N33353531373344393638
AreaMonitoring SitePOCJuly 2014
Waco Mazanec C1037135374763523648424736
Temple Georgia C1045136514949593948485039
Killeen Skylark Field C1047148414948564253505249
AreaMonitoring SitePOCJuly 2014
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 224554175805834222737
West Orange C9/A141232504470635942274130
Port Arthur West C28/A128/A228123394662665532232436
Hamshire C64/C654124363574NANANA222730
SETRPC Port Arthur C6281 N22444653585236202128
SETRPC 40 Sabine Pass C640/C1654120275848645635192228
SETRPC Mauriceville 42 C642/C311/C6651 N46515043697445264826
SETRPC 43 Jefferson Co Airport C643125454969696134242635
Nederland High School C1035 126515683756843283142
AreaMonitoring SitePOCJuly 2014
Austin Northwest C3/A322233455139533537363540
Audubon C38137565341543737394042
Fayette County C6012 N33304346553632313843
Dripping Springs School C6141 N37374339503735383942
CAPCOG McKinney Roughs C6841 N26233832422926293036
CAPCOG Lake Georgetown C6901 N41474647564344424345
Gorzycki Middle School C16031 N38445043553738373845
Lockhart C16041 N29273036483029293239
CAPCOG San Marcos Staples Road C16751 N31303234473132313238
CAPCOG Hutto College Street C66021 N19252723282119212225
AreaMonitoring SitePOCJuly 2014
Houston East C1/G316245778458666334244241
Houston Aldine C8/AF108/X150 257705046676352304447
Channelview C15/AH115 342776552536142214147
Northwest Harris Co. C26/A110/X154232433935504330243635
Hou.DeerPrk2 C35/235/1001/AFH139FP239127535652504929263432
Seabrook Friendship Park C45120424654533231222733
Houston Bayland Park C53/A146 1NA578868534129252331
Conroe Relocated C78/A321159313539637061377357
Manvel Croix Park C84126277359534024223035
Clinton C403/C304/AH113 332747361565026162727
Houston North Wayside C405144726154676143224239
Houston Monroe C406124403549474126193230
Lang C408241788051724643294141
Houston Croquet C409227488077534128232533
Houston Westhollow C410132507064564331243631
Houston Texas Avenue C411133679158544431223332
Park Place C4161NA1585NANANA32253734
Sheldon C5511 N5571545361NANA935NA
Baytown Wetlands Center C5521 N24634951495335223435
Crosby Library C5531 N53623845516053336252
West Houston C5541 N34485847543622183126
La Porte Sylvan Beach C5561 N25515953575937263335
Mercer Arboretum C5571 N55545040576055385448
Tom Bass C5581 N20317151433522193029
Katy Park C5591 N25415353564127222732
Atascocita C5601 N53724242526854335251
Meyer Park C5611 N53645338624650315345
Bunker Hill Village C5621 N29627357513738263131
Huffman Wolf Road C5631 N4957354051575121NANA
HRM-3 Haden Road C603/A114 1 N40797760616139244449
Wallisville Road C617 1 N42716559566749315955
Danciger C618 1 N18363461533023182034
Mustang Bayou C619 1 N22295659534328202233
Texas City 34th St. C620 1 N20345862605026212028
UH Moody Tower C6951 N357310379634934294038
U of H-Sugarland C6961 N22345879484125192727
UH Coastal Center C6971 N18276160504525202132
UH WG Jones Forest C6981 N62384638576462366955
UH West Liberty C6991 N63744048636864447649
Lynchburg Ferry C1015/A165 127806450445738243735
Lake Jackson C1016 118213160533421161930
Baytown Garth C1017142696157546243295651
Galveston 99th St. C1034/A320/X183120218469606034242230
AreaMonitoring SitePOCJuly 2014
San Antonio
San Antonio Northwest C23235394855593736353644
Camp Bullis C58140475552664141404248
Calaveras Lake C59133334249563130313539
Elm Creek Elementary C5011 N32353245503231333339
Fair Oaks Ranch C5021 N38464848623837393944
Bulverde Elementary C5031 N37464142523740374040
New Braunfels Airport C5041 N33333636493131343439
City of Garden Ridge C5051 N29263135412728283032
Seguin Outdoor Learning Center C5061 N32374239523333343540
Heritage Middle School C6221 N41375654673533364047
CPS Pecan Valley C6781 N29324148523229293238
AreaMonitoring SitePOCJuly 2014
Corpus Christi-Victoria
Corpus Christi West C4222192747432416191832
Corpus Christi Tuloso C21124293646432518212030
Victoria C87123253539562422202131
Inez C6091 N19213236412219181833
Coleto C6241 N14152233381612141321
Aransas Pass C6591 N24203151502615211734
Holly Road C6601 N25272833NANANANANA28
Violet C6641 N22263040412317181728
Ingleside C6851 N26233248492717211832
Odem C6861 N27324047432520222230
Taft C6871 N26253548462819212137
Cuero C16021 N25333342523220272837
AreaMonitoring SitePOCJuly 2014
Lower Rio Grande Valley
Mission C43/AP143128342931342121212428
Brownsville C80/AGP180129352637312317222828
Harlingen Teege C1023126362637322524253130
AreaMonitoring SitePOCJuly 2014
Laredo Vidaurri C44/AFGP144/P244129312830332728242828
NA - Data not available.
 N - Data from this instrument does not meet EPA quality assurance criteria and cannot be used for regulatory purposes.

Interpreting the AQI

Air Quality Index

Each NAAQS pollutant has a separate AQI scale, with an AQI rating of 100 corresponding to the concentration of the Federal Standard for that pollutant. Additional information about the AQI and how it can be used is available from the EPA's AirNow web site.

Place your mouse pointer over the scale displayed above to view information about the Air Quality Index, and each of the rating levels.

The actual index calculation is different for each parameter measured and is specified by the EPA. The following table shows the various breakpoints used in calculating the AQI.

AQI Breakpoint Definitions
AQI Range 1hr Ozone
in ppm
8hr Ozone
in ppm
0 - 50 Not Defined 0 - 0.059
51 - 100 Not Defined 0.06 - 0.075
101 - 150 0.125 - 0.164 0.076 - 0.095
151 - 200 0.165 - 0.204 0.096 - 0.115
201 - 300 0.205 - 0.404 0.116 - 0.374
301 - 400 0.405 - 0.504 Not Defined
401 - 500 0.505 - 0.604 Not Defined
500+ Not Defined Not Defined

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 beginning 1/1/2013, 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.