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Peak Daily One-Hour Ozone Averages for September 2016

The table below lists the peak daily one-hour ozone concentrations measured in September 2016 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 SitePOCSeptember 2016POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 2566368563431324338417452505062655758527170624227232647592Ft. Worth Northwest C13/AH302
Keller C172465464503330324136356348544769595253568273594125232740552Keller C17
Frisco C31/C6801484352554038374944405560544456885462706873744633272943641Frisco C31/C680
Midlothian OFW C52/A1371665847513431334333495648414545466548414859553928232754551Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571484764613838372041395667714786535359618694815231262546551Denton Airport South C56/A163/X157
Arlington Municipal Airport C611556553483031304031437347404847536555415457553624232852711Arlington Municipal Airport C61
Dallas North No.2 C63/C6791545358563636324237427456504362677462637571694230252749771Dallas North No.2 C63/C679
Rockwall Heath C691524653463638263232395250434155477772525460594429222944761Rockwall Heath C69
Grapevine Fairway C70/A301/X1821515966583535344438386057545480695862758789734430262847701Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711NANANANANANANANA36434845394041406047414953574227192948591Kaufman C71/A304/X071
Granbury C73/C6811557256563432334142436050454144534747394756613928313248521Granbury C73/C681
Eagle Mountain Lake C75 1485169553432324037385050534365474552557469614028272339531Eagle Mountain Lake C75
Parker County C761505366523732283732405249473844474146395056564727323541481Parker County C76
Cleburne Airport C77/C6821737860684241455647587258554852656657516066784937263460611Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3686263593634314033478662534767637562558776704129273248843Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C40216459525331352835284377524243524970574359585637262126NANA1Dallas Executive Airport C402
Greenville C1006/A1981464052473736274040405252395049415350475356574030243140701Greenville C1006/A198
Pilot Point C10321484548564241385845374968603959544953646380885430292443521Pilot Point C1032
Italy C1044/A3231804949603331283528564850443848426745444857643828203156531Italy C1044/A323
Corsicana Airport C10511504951553641343635474647423943714945585461644533233048531Corsicana Airport C1051
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C6442575255512833312835485650534550516052676064642842483245652Longview C19/A127/C644
Tyler Airport Relocated C821525050423026242632454643554960384844496376553139252638621Tyler Airport Relocated C82
Karnack C85/AFHP3031433942442931343938353646483744393640434655583242453233571Karnack C85/AFHP303
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X1512515753624534363548388343415551365347726053444344484453492El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X1591424651533930383352377540414747336846714859373742474449431Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 1394651603529333649337943394846345845695851394144464248411Chamizal C41/AH126
Socorro Hueco C49/F31214141444537332735603556454740444810170603346353644464651361Socorro Hueco C49/F312
Skyline Park C721515162624036403561356942405056355960636252464244454445421Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N384246453629353234303435413537363432313243454538373537333BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C4141374150483731343656355344434147346548544153364043464346371Ivanhoe C414
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Waco
Waco Mazanec C10371644349583029273132534648414141524949445860694024182957511Waco Mazanec C1037
Temple Georgia C10451624952562930304131515252454441575342505759693828253453501Temple Georgia C1045
Killeen Skylark Field C10471554550553533425043464749445047545041525258654629283346551Killeen Skylark Field C1047
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2474243432328282846454346484153264149534554362941293046532Beaumont-Downtown C2/A112/C2002
West Orange C9/A1412414042382423222834373832404348234337464376283234233637442West Orange C9/A141
Port Arthur West C28/A128/A2281515259362326252945476846364445245051615358273338272851601Port Arthur West C28/A128/A228
Hamshire C64/C6541534365402424262339284040445952324644495081362634263745521Hamshire C64/C654
SETRPC 40 Sabine Pass C640/C16541435643252021242833295834283239275733595653334535202961641SETRPC 40 Sabine Pass C640/C1654
SETRPC 43 Jefferson Co Airport C6431454555382325242844485942364946245351594964333339263948611SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 1454546392426232641484637345147245346554870333238274244611Nederland High School C1035
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Austin
Austin Northwest C3/A3222636257502726283530515452524642645853436263603828332843512Austin Northwest C3/A322
Audubon C381645355492831303831484754514545595346526563644028282635461Audubon C38
Fayette County C6012 N474242462220222426464448414144444133305357463421263144542Fayette County C601
Dripping Springs School C6141 N654860472827263530504649445253645444495962604028302737461Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N534444432522242827474845354436445327274657493221282535691CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N615049533236374337474655534240554656636059634329302840481CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N585954442726362927505247464848705645405760573827322643481Gorzycki Middle School C1603
Lockhart C16041 N514947442221282425445147344142533227324353413324252641561Lockhart C1604
St. Edwards University C16051 N495545392220222323425038383836514736274749462922252437421St. Edwards University C1605
CAPCOG San Marcos Staples Road C16751 N555248431744402525455751394445544238334852463624292036441CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N515243492724252827464744374040464339355250513423263041631CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G31624350525025283429332440514033463453471014450472127282934712Houston East C1/G316
Houston Aldine C8/AF108/X150 2585148532545544435284352463744384848904652592933452845722Houston Aldine C8/AF108/X150
Channelview C15/AH115 3474647472530323139293853383350325244834754402221283039783Channelview C15/AH115
Northwest Harris Co. C26/A110/X15425045465124412831303436524233373351336942536325NANA2635552Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP239153746542212929273334564540504232716435565452024283447851Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C451665657492528293234387140385042338468606269462324253949801Seabrook Friendship Park C45
Houston Bayland Park C53/A146 1656570582328292631285484564660456943736480462025254352741Houston Bayland Park C53/A146
Conroe Relocated C78/A3211523746553967605740393746383338323937554753513733302937621Conroe Relocated C78/A321
Manvel Croix Park C84169868431NA26252631346652485643405937536478421923294963891Manvel Croix Park C84
Clinton C403/C304/AH113 3495654542424272230234860484251376448945058482126274042753Clinton C403/C304/AH113
Houston North Wayside C40514546405124293428252141493933403346451014646472226413344661Houston North Wayside C405
Houston Monroe C4061527275391919222128235447464640315539504558391620223641801Houston Monroe C406
Lang C4082555858713233353231254866503846366239975262582328263243622Lang C408
Houston Croquet C4092607173442227272631275770545849436140625487412125254355832Houston Croquet C409
Houston Westhollow C4101576463612827303132284782564562456538656173482324294053651Houston Westhollow C410
Houston Texas Avenue C41115761646633283528382657765641553764491055863512327273753731Houston Texas Avenue C411
Park Place C4161556779492325282635255968635146416248755377472223274345831Park Place C416
Sheldon C5511 NNANANANANANANANANANANANA272933273433453135332322262731481Sheldon C551
Baytown Wetlands Center C5521 N222225131011121315121811143029153428302540261215162126461Baytown Wetlands Center C552
Crosby Library C5531 N45424943283241443722384034374515NANANANANANANANANANANANA1Crosby Library C553
West Houston C5541 N222223312422212124232330212426232823362833272323232323NA1West Houston C554
La Porte Sylvan Beach C5561 N5639NANANANANANANANANA36354545296855615165432022254241681La Porte Sylvan Beach C556
Mercer Arboretum C5571 N221922221222272315101720191921162020302225261817211620301Mercer Arboretum C557
Tom Bass C5581 N506875341919202026225441414639295033434960331516193746801Tom Bass C558
Katy Park C5591 N434646553225181824203366443943455131414358482439352635481Katy Park C559
Atascocita C5601 N393635402645474537223539343031263236643442422623362236571Atascocita C560
Meyer Park C5611 N414040472037353123193043373129243127593844512531272133441Meyer Park C561
Bunker Hill Village C5621 N575958622224232328194479423553376236775863481923223750671Bunker Hill Village C562
Huffman Wolf Road C5631 N423738422429474542183439293334283532463546392119282436671Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N4955535031333533333046484941533752511044461502024253238781HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N484554472830373638323849424252355558764958442124303339671Wallisville Road C617
Danciger C618 1 N756744281919171522254339233737473125344764341516213560601Danciger C618
Texas City 34th St. C620 1 N5760734327303033354268454143453590416059674724262744731071Texas City 34th St. C620
UH Moody Tower C6951 N606770552729303037326382604661416851966377522426294356831UH Moody Tower C695
U of H-Sugarland C6961 N6776104492728242727295268497058575037585397452522281328721U of H-Sugarland C696
UH Coastal Center C6971 N5373603123242727314087443540413352295962614217192441681001UH Coastal Center C697
UH WG Jones Forest C6981 N534847533865575438374146453539294135565055564339403044631UH WG Jones Forest C698
UH West Liberty C6991 N4337404125273838372234383329322735NA363645352221362236561UH West Liberty C699
Lynchburg Ferry C1015/A165 1414256422629293133344142333642294942804265422121252938711Lynchburg Ferry C1015/A165
Lake Jackson C1016 1716166312524222128324849333938482924404860421918273066661Lake Jackson C1016
Baytown Garth C10171474350442627353438303546404052335256744758421822283137631Baytown Garth C1017
Galveston 99th St. C1034/A320/X18315471NA622930273437437852414243375628535662441923294052861Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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San Antonio
San Antonio Northwest C232665973492827293330456550585053665351455768553827302830492San Antonio Northwest C23
Camp Bullis C58 1634861493031334236455460494756655955566268584233313032571Camp Bullis C58
Calaveras Lake C591574951442823252725445146374341493333313854433526273036901Calaveras Lake C59
Elm Creek Elementary C5011 N655753402625272828486343484850623628313959473525282635421Elm Creek Elementary C501
Fair Oaks Ranch C5021 N524260452830313936414757484251505545545960554031282428441Fair Oaks Ranch C502
Bulverde Elementary C5031 N604660453029334334454962454753555153565961524231292632411Bulverde Elementary C503
New Braunfels Airport C5041 N464943392321222321394642303639413330284344373120251828341New Braunfels Airport C504
City of Garden Ridge C5051 N635955422724263027525548494654614545385158493925272734491City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N484546412422262625374450353743513326313149403322282034491Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N504444382521222422434541333837443029263348383122232129791Heritage Middle School C622
CPS Pecan Valley C6781 N575160402621232622485841414141503642333853413223262425731CPS Pecan Valley C678
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C42556456452723232120245044383639392120233959523222272838452Corpus Christi West C4
Corpus Christi Tuloso C211516554382321232121304750413640382423304356383123292939461Corpus Christi Tuloso C21
Victoria C871495349382321232628284352364452343228354658342722323342601Victoria C87
Inez C6091 N505447362222232325283849354456343026384457342720313538441Inez C609
Holly Road C6601 N727665533227272422275752414144462523254469613726333345551Holly Road C660
Violet C6641 N6075674126242524NA285252494447462525255361443125323545531Violet C664
Ingleside C6851 N496249392824221920255137293234352122233257383423282838421Ingleside C685
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP1431444849352822242223263037393534362422323245542824242628421Mission C43/AP143
Brownsville C80/AGP1801NA3348352617201919192528262930222323172647612623242431421Brownsville C80/AGP180
Harlingen Teege C10231455446372620222325262645312831292525322646473026272833431Harlingen Teege C1023
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P2441485646282519242426203328262934332726292939503127252226461Laredo Vidaurri C44/AFGP144/P244
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 - 0.054
51 - 100 Not Defined 0.055 - 0.070
101 - 150 0.125 - 0.164 0.071 - 0.085
151 - 200 0.165 - 0.204 0.086 - 0.105
201 - 300 0.205 - 0.404 0.106 - 0.200
301 - 400 0.405 - 0.504 Not Defined
401 - 500 Not Defined 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.