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Daily Maximum Eight-Hour Ozone Averages for September 2016

The table below lists the peak daily maximum eight-hour ozone concentrations measured in September 2016 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 2016POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 24556635232292836323761484441545553524563615840242123122Ft. Worth Northwest C13/AH302
Keller C1724047584830292835323155464540575048464866665738232024142Keller C17
Frisco C31/C68014241485136353341363548NVNV39527051526157636841272427171Frisco C31/C680
Midlothian OFW C52/A13715647444730282734284148443737404363453845495236242323141Midlothian OFW C52/A137
Denton Airport South C56/A163/X157141445557363334NVNV3551615941634850504866817246282321171Denton Airport South C56/A163/X157
Arlington Municipal Airport C611NV53474727262431263761453742435058483847525233202125141Arlington Municipal Airport C61
Dallas North No.2 C63/C67914745525333322936313861524440536167515561656438252424181Dallas North No.2 C63/C679
Rockwall Heath C6914540474433312430263645473937484361594650575539252226201Rockwall Heath C69
Grapevine Fairway C70/A301/X18214450585433322939333553544245615853526472756739242425151Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711NANANANANANANANV294043433637373849433746495236251727151Kaufman C71/A304/X071
Granbury C73/C68114961525330292935323954474238394844443743535737262628131Granbury C73/C681
Eagle Mountain Lake C75 1424562523230273533344546473552424245406064553824202071Eagle Mountain Lake C75
Parker County C7614445575028292632293847474333394340413643535236262631241Parker County C76
Cleburne Airport C77/C68216165566539383843405267564844476263534955626846342331161Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 35452565534312835304273544444525768574869656338222426183Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C4021534946492829243026376349373942466250405253533319211931Dallas Executive Airport C402
Greenville C1006/A19814138464434312532303745483342463948444550525435262227181Greenville C1006/A198
Pilot Point C103213741465339363546403343625035514746455952697346272522211Pilot Point C1032
Italy C1044/A32316045455130272331264644433835384060433946525536231926151Italy C1044/A323
Corsicana Airport C105114745475133312729294542433636385146444449555936291527161Corsicana Airport C1051
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C64424845474626292824304344444639463945475553615924394128172Longview C19/A127/C644
Tyler Airport Relocated C8214844454126252224274242414547543543424551685226362425151Tyler Airport Relocated C82
Karnack C85/AFHP30314037414027272931313231403933333231323843475326393828121Karnack C85/AFHP303
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X1512NV52475142302832443668393743413246404835373638424339212El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15913443464637252629453656353540362951425633383132394340211Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 13242444933262633433263383436373147394732363034414136211Chamizal C41/AH126
Socorro Hueco C49/F31213640404036282432513346424138383768535030373335424339221Socorro Hueco C49/F312
Skyline Park C7214147515239293132483459413845443148424742423939414239341Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N3740444434273330NVNV32323834343532302932384443363434313BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C41413439454335282733483348403838393149414833363137404239311Ivanhoe C414
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Waco
Waco Mazanec C103715035455428272430274944463834344445444252556237221526141Waco Mazanec C1037
Temple Georgia C104515345485327262834294949504040384949404253556334242131181Temple Georgia C1045
Killeen Skylark Field C104715241485131293640364346483942395048373949526139252431181Killeen Skylark Field C1047
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 24437393419232323403139383333472232424741NV2927362324152Beaumont-Downtown C2/A112/C2002
West Orange C9/A14123634383121202125322829293037422224333940552428322127142West Orange C9/A141
Port Arthur West C28/A128/A2281444354322222222839354434303740233743554754NV29342325161Port Arthur West C28/A128/A228
Hamshire C64/C654149NV53322221242137233637354945273337NV45683221312128141Hamshire C64/C654
SETRPC 40 Sabine Pass C640/C165413740382318182026302437282628312544294944472632321922151SETRPC 40 Sabine Pass C640/C1654
SETRPC 43 Jefferson Co Airport C64314240453221222127373544353141412235445344572831352129171SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 14138423221222126373538332941402232424444612830352228161Nederland High School C1035
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Austin
Austin Northwest C3/A32225857504825232630264651484341395549413456584934232726212Austin Northwest C3/A322
Audubon C3815548474726272732284343504142425146343755575236242523171Audubon C38
Fayette County C6012 N453539431918192223394247363840414020NV44544028202226132Fayette County C601
Dripping Springs School C6141 N5643534525252132284543473748475144323650564338242724191Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N4940414118192123234243423339344144242343534330172023141CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N5545464929303337344243504439385143434456555439252425181CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N535149422423NVNV244447453945445347353351554834212725211Gorzycki Middle School C1603
Lockhart C16041 N4642414119192122214044432936384329242237503729202324181Lockhart C1604
St. Edwards University C16051 N4545413819182021203846363234334542312441453926182020151St. Edwards University C1605
CAPCOG San Marcos Staples Road C16751 N5145424112211623214054453239424939322844504034212317161CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N4846384523212326234345423236374341353048484230202126191CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G3162383843392127272423173643282941254337663547421820162472Houston East C1/G316
Houston Aldine C8/AF108/X150 25242454323403530261939463634392941396439495222192525112Houston Aldine C8/AF108/X150
Channelview C15/AH115 34337423522262627301935423330402645386037483714182025133Channelview C15/AH115
Northwest Harris Co. C26/A110/X15424640424521352325262634463531352938264835505419NANANV112Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP239145485235192724233025443935NVNV2752NANV40NVNV18192229111Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4515244523423262627312954373442382864425051584420222027111Seabrook Friendship Park C45
Houston Bayland Park C53/A146 15954564119252422272148643843523653355351724118192034131Houston Bayland Park C53/A146
Conroe Relocated C78/A32115034434831504449353135433529362735324636494430262425141Conroe Relocated C78/A321
Manvel Croix Park C841636668NVNANV2122272758453951393546314449654116182344141Manvel Croix Park C84
Clinton C403/C304/AH113 344434739212222NV191742483737422849386539544316181829113Clinton C403/C304/AH113
Houston North Wayside C4051413738361927242018133542NV29362639356537404117151724101Houston North Wayside C405
Houston Monroe C4061444954301818191823214640344234254530413753NV1314173191Houston Monroe C406
Lang C4082514753502229252421184355343539314735674356451819192792Lang C408
Houston Croquet C40925557NV3418242222262251543851443649324946744018182037132Houston Croquet C409
Houston Westhollow C4101NV54584723252324282444644143544051335151684320202534141Houston Westhollow C410
Houston Texas Avenue C41115249524724252725262048563637483252397045554619192131101Houston Texas Avenue C411
Park Place C4161485161372123232326204951404341315338604265431716213381Park Place C416
Sheldon C5511 NNANANANANANANANANANANANANV27312530303628323019202124201Sheldon C551
Baytown Wetlands Center C5521 N191724118910101391681222251225202621332111131317101Baytown Wetlands Center C552
Crosby Library C5531 N403845362430343735173436303139NVNANANANANANANANANANANA1Crosby Library C553
West Houston C5541 N2020212422202120232222252021222224222724302322222223241West Houston C554
La Porte Sylvan Beach C5561 N46NVNANANANANANANANANANV3138382358424845543917202030101La Porte Sylvan Beach C556
Mercer Arboretum C5571 N20172018102017151181519151513131716241923231412121391Mercer Arboretum C557
Tom Bass C5581 N455256261618171723194436324233244024353852321212162991Tom Bass C558
Katy Park C5591 N423843411821151517173155323339333722343653371517192391Katy Park C559
Atascocita C5601 N3730333419353432281831352927252128294731373919162019101Atascocita C560
Meyer Park C5611 N393537371731212217162836252719202723443341441918171891Meyer Park C561
Bunker Hill Village C5621 N5348524313211519201441562932463145305446584016161731141Bunker Hill Village C562
Huffman Wolf Road C5631 N403236342026383633122932232629232727403240351615181781Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N4442493922292726251939NVNV364128464184375243161917NVNA1HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N4641483926273132352336403737462942436043554017202628NA1Wallisville Road C617
Danciger C618 1 N64544125171814NV18193837NV32323625202639553310121727NA1Danciger C618
Texas City 34th St. C620 1 N5150663425272631333656423840423253305053614621222438221Texas City 34th St. C620
UH Moody Tower C6951 N54565843252728272925526142435134584066486647201923NV121UH Moody Tower C695
U of H-Sugarland C6961 N62647839232519212526495741605145453149457743202024NVNA1U of H-Sugarland C696
UH Coastal Center C6971 N4853572621NVNV23273062403136NV3036224352544016182034161UH Coastal Center C697
UH WG Jones Forest C6981 N5142454830524139322938433731372837334843534932283126151UH WG Jones Forest C698
UH West Liberty C6991 NNV333834192331303317303630272924NVNANV33423216172018111UH West Liberty C699
Lynchburg Ferry C1015/A165 13835443322262728302334332931372345345434543814191925121Lynchburg Ferry C1015/A165
Lake Jackson C1016 16552592722221919252542413137363625203240574017152223131Lake Jackson C1016
Baytown Garth C101714539453624242829332033373535452739415941543915182426131Baytown Garth C1017
Galveston 99th St. C1034/A320/X18315060NA492626243535355745374039333924NV51584218212436181Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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San Antonio
San Antonio Northwest C2325646644625242729274054474645495744383645584835252723222San Antonio Northwest C23
Camp Bullis C58 15443554628273035314148554143535248424451584938252723211Camp Bullis C58
Calaveras Lake C5914945484024202224233748423438404431272732493633242325211Calaveras Lake C59
Elm Creek Elementary C5011 N5847513824222424233956403841445331252531494332232424211Elm Creek Elementary C501
Fair Oaks Ranch C5021 N4636534426262832313742533937444143344149524636252522221Fair Oaks Ranch C502
Bulverde Elementary C5031 N5042544327252935304144533840474644394152554437252423221Bulverde Elementary C503
New Braunfels Airport C5041 N4342403618182021183542392431353728252435433128171916141New Braunfels Airport C504
City of Garden Ridge C5051 N5548524023222328244451463842495238383146544136232424231City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N4239413820202224223341443034403929232127443430182017151Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N4338423520171921203542372933364028232228443329201918171Heritage Middle School C622
CPS Pecan Valley C6781 N503950362219222420394940333839463230273247363019NV19161CPS Pecan Valley C678
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C42506253372320211918224637NVNV353317191934553624202426142Corpus Christi West C4
Corpus Christi Tuloso C211435852342219NV20202442403532363421202338543526212627171Corpus Christi Tuloso C21
Victoria C8714147463421192121222540463440433228232841553122192728151Victoria C87
Inez C6091 N4247443121NV2021222536443239443027232938513120172730171Inez C609
Holly Road C6601 N64726343282325222125534336404241222122386546NV252928191Holly Road C660
Violet C6641 N54696439252224NVNA2644424139433923222344594126232832191Violet C664
Ingleside C6851 N4155473323232018192042322730313018201929513528242424151Ingleside C685
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP14314144443025202220202226303229313121192327434926222321171Mission C43/AP143
Brownsville C80/AGP1801NANV43282416NV16171722232424NV1819191523444522212222161Brownsville C80/AGP180
Harlingen Teege C102314244432923182021211924282726282322212123454127232524141Harlingen Teege C1023
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P24413645392622172121201829262224302925242425374429252319121Laredo 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 - 0.054
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.