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Daily Maximum Eight-Hour Ozone Averages for September 2014

The table below lists the peak daily maximum eight-hour ozone concentrations measured in September 2014 in each community where the TCEQ measures ozone. Concentrations that are rated Moderate or higher are color-highlighted based on the EPA-defined Air Quality Index colors. (See Interpreting the AQI.) All ozone measurements are in parts per billion.

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 with AQI colors
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 233343330394943565637271624415157524129416554NA2Ft. Worth Northwest C13/AH302
Keller C17233353231404740575437241523415766463833436648NA2Keller C17
Frisco C31/C680138414039544441696345261522355347573640505644NA1Frisco C31/C680
Midlothian OFW C52/A137130313228374950515237361422323839353330434548NA1Midlothian OFW C52/A137
Denton Airport South C56/A163/X157139453836524138676543201424386655533341515844NA1Denton Airport South C56/A163/X157
Arlington Municipal Airport C61128302926365246505134301221354748373627415249NA1Arlington Municipal Airport C61
Dallas North No.2 C63/C6791353536NV455140575540291319364852473337455841NA1Dallas North No.2 C63/C679
Rockwall Heath C69136353938474539606037261520364349473641495244NA1Rockwall Heath C69
Grapevine Fairway C70/A301/X1821343837334949436461412816234060NV543738476547NA1Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X071133353740434343535533331816343239363238454844NA1Kaufman C71/A304/X071
Granbury C73/C681134353129333743495037311628374146373536385163NA1Granbury C73/C681
Eagle Mountain Lake C75 129332827364036504934201423405263403429425645NA1Eagle Mountain Lake C75
Parker County C76128292524284036464430151224394650353134385652NA1Parker County C76
Cleburne Airport C77/C682135353531384350545639391425334544373634435062NA1Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3333234314359455554383113214051534737344463NVNA3Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C40213233NV30NV6249515438361219374245343329405344NA1Dallas Executive Airport C402
Greenville C1006/A198131343435454030545736151517344149423442484839NA1Greenville C1006/A198
Pilot Point C1032140434140564035716950211725325945573638485243NA1Pilot Point C1032
Italy C1044/A323131NV3529383948505135401221273836362931434745NA1Italy C1044/A323
Corsicana Airport C1051136364441424346565635272618323140383030464843NA1Corsicana Airport C1051
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644227262736414937664429251620393738NV3644505341NA2Longview C19/A127/C644
Tyler Airport Relocated C821282925304046434346293421213437NV3331NANANANVNA1Tyler Airport Relocated C82
Karnack C85/AFHP303127272837433828404227301718312828372432475038NA1Karnack C85/AFHP303
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X151244505133313125393135323230292232382627503422NA2El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X159138464130302826362634292927262024332226473121NA1Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 145494431292623NVNANANV2626261822342129513119NA1Chamizal C41/AH126
Socorro Hueco C49/F312146574134312927343441353427272132322533563025NA1Socorro Hueco C49/F312
Skyline Park C72143565035343024523636353430282525342528413127NA1Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N262318161456363640353122202532373333323046NA3BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C4141384437272724223330NVNVNANANA1620261929382316NA1Ivanhoe C414
Cd Juarez Delphi C6631 N2837312423222127202623242120151924NVNANANANANA1Cd Juarez Delphi C663
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Waco
Waco Mazanec C10371333332293841425550NV371620283039362530475144NA1Waco Mazanec C1037
Temple Georgia C1045135333229363749595241452924344345372635435654NA1Temple Georgia C1045
Killeen Skylark Field C1047139353230364046596145453125364545402937395653NA1Killeen Skylark Field C1047
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 228252732323042444817252414204021201822434534NA2Beaumont-Downtown C2/A112/C2002
West Orange C9/A1412252326322229373547202624142136NV2520264342NVNA2West Orange C9/A141
Port Arthur West C28/A128/A228127253027242447524417202515233321191830424537NA1Port Arthur West C28/A128/A228
Hamshire C64/C65412524221923233549431823251726NV19181821434937NA1Hamshire C64/C654
SETRPC Port Arthur C6281 N26222223212141464117192313182718141624343936NA1SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C1654129262719252442404119222619313021212028424945NA1SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N26252631282930325122342412184425201724413728NA1SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C643130293131283051535125272917244029282532495746NA1SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 126262831293143464719252516213524212027414736NA1Nederland High School C1035
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Austin
Austin Northwest C3/A3222343328213438456243NV343612263838373828304855NA2Austin Northwest C3/A322
Audubon C38137363127373941624937403314274446403530315058NA1Audubon C38
Fayette County C6012 N30292925313046503828282617293932292724394752NA2Fayette County C601
Dripping Springs School C6141 N33332725333541514535333317254544363227284854NA1Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N25242320252339433625272410213328273020253943NA1CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N35342928363840625139403517NVNVNV413130334851NA1CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N27262220252735443425272911213632292822254246NA1Gorzycki Middle School C1603
Lockhart C16041 N31302722313445523929332814274135302921324752NA1Lockhart C1604
CAPCOG San Marcos Staples Road C16751 N28272323252536393523252411263629252216223750NA1CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N24222119232433393023222511192529232223242926NA1CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G31622824272523353148422133121318352010919404834NA2Houston East C1/G316
Houston Aldine C8/AF108/X150 2272428243129314246213913162132251511243943NVNA2Houston Aldine C8/AF108/X150
Channelview C15/AH115 32321202122443042432033161519321911916384532NA3Channelview C15/AH115
Northwest Harris Co. C26/A110/X154232333933433332564724392820244135241728434645NA2Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23912623262722293358401828191421352015122037NVNVNA1Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C45123232225222536523912232215243919161427404843NA1Seabrook Friendship Park C45
Houston Bayland Park C53/A146 123242327273132743316261717275024181422485954NA1Houston Bayland Park C53/A146
Conroe Relocated C78/A321142413744353534386736512520273527261827404738NA1Conroe Relocated C78/A321
Manvel Croix Park C84123232223212030642615192317274021171519375154NA1Manvel Croix Park C84
Clinton C403/C304/AH113 32417232120293149291524151621411410917384941NA3Clinton C403/C304/AH113
Houston North Wayside C40512623271926333444401834121722321911818434642NA1Houston North Wayside C405
Houston Monroe C406120202420192129603217211713203618151117374543NA1Houston Monroe C406
Lang C40822625272429353662422236151723382413920444747NA2Lang C408
Houston Croquet C409224252425252633743418272319265224191622425955NA2Houston Croquet C409
Houston Westhollow C410124262524262832723620302220275225211825505352NA1Houston Westhollow C410
Houston Texas Avenue C411122212620242933543517251316233919111117414843NA1Houston Texas Avenue C411
Park Place C416123242922242932623820251414204120131119415342NA1Park Place C416
Sheldon C5511 NNANANANANANANANANV21341616182820141119374133NA1Sheldon C551
Baytown Wetlands Center C5521 N22192023202726464013271914203018111116354436NA1Baytown Wetlands Center C552
Crosby Library C5531 N23252224243227335020421614172922141119394229NA1Crosby Library C553
West Houston C5541 NNANANANANANANANANANV212019192318121213313519NA1West Houston C554
La Porte Sylvan Beach C5561 NNANANANANANANANANANV232215213219161520344039NA1La Porte Sylvan Beach C556
Mercer Arboretum C5571 N26283232363128355426442117203023171320393935NA1Mercer Arboretum C557
Tom Bass C5581 N1414141413132152221014141017321511713324238NA1Tom Bass C558
Katy Park C5591 N28252626272633593219272620254330222226475044NA1Katy Park C559
Atascocita C5601 N28262628273028304923381414182824161321393832NA1Atascocita C560
Meyer Park C5611 N30303731443434505028452420253631201525444342NA1Meyer Park C561
Bunker Hill Village C5621 N23252424253030623520311718254023141118434748NA1Bunker Hill Village C562
Huffman Wolf Road C5631 N172016171620192144163212812201496133229NVNA1Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N2624252523403351422233181520402212920425240NA1HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N29292529254135505620422418243925191523465342NA1Wallisville Road C617
Danciger C618 1 N22232120182119492216182224294121171418374969NA1Danciger C618
Mustang Bayou C619 1 N24242324192327603015222717293722181522424657NA1Mustang Bayou C619
Texas City 34th St. C620 1 N24232422181828442211141914193119161224383836NA1Texas City 34th St. C620
UH Moody Tower C6951 N27283328293540714423321920275025171221496155NA1UH Moody Tower C695
U of H-Sugarland C6961 N2423NV21232326642818232421284722191619425955NA1U of H-Sugarland C696
UH Coastal Center C6971 N24242525202033583014212617253921171526424446NA1UH Coastal Center C697
UH WG Jones Forest C6981 N403735NV424037426334492620273530251625384639NA1UH WG Jones Forest C698
UH West Liberty C6991 NNV2925282730333660295024172133NV221723494733NA1UH West Liberty C699
Lynchburg Ferry C1015/A165 122222123223826464118291914183015141317354031NA1Lynchburg Ferry C1015/A165
Lake Jackson C1016 12324222017212355NV16192322343721191520404658NA1Lake Jackson C1016
Baytown Garth C1017126272426233832475120392317223724191623434839NA1Baytown Garth C1017
Galveston 99th St. C1034/A320/X1831282828NV252539734620263222284228242240505149NA1Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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San Antonio
San Antonio Northwest C23234342521364242513931353520324740353329325260NA2San Antonio Northwest C23
Camp Bullis C58137372724374832594437383319314840394029345461NA1Camp Bullis C58
Calaveras Lake C59131302219313737463527292317354234362828314958NA1Calaveras Lake C59
Elm Creek Elementary C5011 N31312220333137433326272819403733312529314560NA1Elm Creek Elementary C501
Fair Oaks Ranch C5021 N33332322334129533931342615233333323223274247NA1Fair Oaks Ranch C502
Bulverde Elementary C5031 N37352524384429594740363018283737413525294856NA1Bulverde Elementary C503
New Braunfels Airport C5041 N32312623343646473929333014304233342822264657NA1New Braunfels Airport C504
City of Garden Ridge C5051 N25241817272932403125242515253425272015183446NA1City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N33322724353842443930332813294333342625304954NA1Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N32292323333540453628302618354033372929324961NA1Heritage Middle School C622
CPS Pecan Valley C6781 N3533242130NANANV39313126183941353631293048NVNA1CPS Pecan Valley C678
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C4225282520202527252321232727324930252025334957NA2Corpus Christi West C4
Corpus Christi Tuloso C211242623NV172225272119222725304226251823264152NA1Corpus Christi Tuloso C21
Victoria C87126272419222728482622262421284226302022335151NA1Victoria C87
Inez C6091 N2325231920202636201920242227382526172131NVNANA1Inez C609
Coleto C6241 N19201915172023332118171614223520211614264138NA1Coleto C624
Aransas Pass C6591 N23252116172320181818202323294325191621344556NA1Aransas Pass C659
Holly Road C6601 N24272420202324212020232723284124191725375256NA1Holly Road C660
Violet C6641 N21232216152023201815182224294323221421224052NA1Violet C664
Ingleside C6851 N23252118192220171919202324283925201722304047NA1Ingleside C685
Odem C6861 N23262319222423282320232624293927241925263948NA1Odem C686
Taft C6871 N26292521222727232522243028334531272229314556NA1Taft C687
Cuero C16021 N28272617262836462626302516313927282420355556NA1Cuero C1602
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP143128272518171924242019212722263134201422162634NA1Mission C43/AP143
Brownsville C80/AGP180123242617141722171818202323232527181721152837NA1Brownsville C80/AGP180
Harlingen Teege C1023126262822202326262522262524293432191822163244NA1Harlingen Teege C1023
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P2441NANANV181622242222232315192231262319191729NANA1Laredo Vidaurri C44/AFGP144/P244
POC (Parameter Occurrence Code): a code used to correctly separate data from multiple instruments at one site.
NV - There are not enough valid eight-hour averages for this day (there must be eighteen valid eight-hour averages).
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.