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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 256636856343132433841745250506265575852717062422723264759382Ft. Worth Northwest C13/AH302
Keller C17246546450333032413635634854476959525356827359412523274055352Keller C17
Frisco C31/C680148435255403837494440556054445688546270687374463327294364341Frisco C31/C680
Midlothian OFW C52/A137166584751343133433349564841454546654841485955392823275455461Midlothian OFW C52/A137
Denton Airport South C56/A163/X157148476461383837204139566771478653535961869481523126254655321Denton Airport South C56/A163/X157
Arlington Municipal Airport C61155655348303130403143734740484753655541545755362423285271391Arlington Municipal Airport C61
Dallas North No.2 C63/C679154535856363632423742745650436267746263757169423025274977381Dallas North No.2 C63/C679
Rockwall Heath C69152465346363826323239525043415547777252546059442922294476341Rockwall Heath C69
Grapevine Fairway C70/A301/X182151596658353534443838605754548069586275878973443026284770351Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711NANANANANANANANA3643484539404140604741495357422719294859351Kaufman C71/A304/X071
Granbury C73/C681155725656343233414243605045414453474739475661392831324852411Granbury C73/C681
Eagle Mountain Lake C75 148516955343232403738505053436547455255746961402827233953331Eagle Mountain Lake C75
Parker County C76150536652373228373240524947384447414639505656472732354148351Parker County C76
Cleburne Airport C77/C682173786068424145564758725855485265665751606678493726346061521Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 368626359363431403347866253476763756255877670412927324884403Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C40216459525331352835284377524243524970574359585637262126NANANA1Dallas Executive Airport C402
Greenville C1006/A198146405247373627404040525239504941535047535657403024314070331Greenville C1006/A198
Pilot Point C1032148454856424138584537496860395954495364638088543029244352331Pilot Point C1032
Italy C1044/A323180494960333128352856485044384842674544485764382820315653521Italy C1044/A323
Corsicana Airport C1051150495155364134363547464742394371494558546164453323304853391Corsicana Airport C1051
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644257525551283331283548565053455051605267606464284248324565342Longview C19/A127/C644
Tyler Airport Relocated C82152505042302624263245464355496038484449637655313925263862381Tyler Airport Relocated C82
Karnack C85/AFHP303143394244293134393835364648374439364043465558324245323357321Karnack C85/AFHP303
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X151251575362453436354838834341555136534772605344434448445349552El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X159142465153393038335237754041474733684671485937374247444943531Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 139465160352933364933794339484634584569585139414446424841481Chamizal C41/AH126
Socorro Hueco C49/F3121414144453733273560355645474044481017060334635364446465136511Socorro Hueco C49/F312
Skyline Park C72151516262403640356135694240505635596063625246424445444542531Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N38424645362935323430343541353736343231324345453837353733413BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C414137415048373134365635534443414734654854415336404346434637511Ivanhoe C414
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Waco
Waco Mazanec C1037164434958302927313253464841414152494944586069402418295751541Waco Mazanec C1037
Temple Georgia C1045162495256293030413151525245444157534250575969382825345350531Temple Georgia C1045
Killeen Skylark Field C1047155455055353342504346474944504754504152525865462928334655551Killeen Skylark Field C1047
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 247424343232828284645434648415326414953455436294129304653412Beaumont-Downtown C2/A112/C2002
West Orange C9/A141241404238242322283437383240434823433746437628323423363744382West Orange C9/A141
Port Arthur West C28/A128/A228151525936232625294547684636444524505161535827333827285160431Port Arthur West C28/A128/A228
Hamshire C64/C654153436540242426233928404044595232464449508136263426374552481Hamshire C64/C654
SETRPC 40 Sabine Pass C640/C1654143564325202124283329583428323927573359565333453520296164521SETRPC 40 Sabine Pass C640/C1654
SETRPC 43 Jefferson Co Airport C643145455538232524284448594236494624535159496433333926394861421SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 145454639242623264148463734514724534655487033323827424461411Nederland High School C1035
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Austin
Austin Northwest C3/A322263625750272628353051545252464264585343626360382833284351572Austin Northwest C3/A322
Audubon C38164535549283130383148475451454559534652656364402828263546521Audubon C38
Fayette County C6012 N47424246222022242646444841414444413330535746342126314454552Fayette County C601
Dripping Springs School C6141 N65486047282726353050464944525364544449596260402830273746541Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N53444443252224282747484535443644532727465749322128253569481CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N61504953323637433747465553424055465663605963432930284048511CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N58595444272636292750524746484870564540576057382732264348561Gorzycki Middle School C1603
Lockhart C16041 N51494744222128242544514734414253322732435341332425264156591Lockhart C1604
St. Edwards University C16051 N49554539222022232342503838383651473627474946292225243742471St. Edwards University C1605
CAPCOG San Marcos Staples Road C16751 N55524843174440252545575139444554423833485246362429203644621CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N51524349272425282746474437404046433935525051342326304163511CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G3162435052502528342933244051403346345347101445047212728293471392Houston East C1/G316
Houston Aldine C8/AF108/X150 258514853254554443528435246374438484890465259293345284572512Houston Aldine C8/AF108/X150
Channelview C15/AH115 347464747253032313929385338335032524483475440222128303978463Channelview C15/AH115
Northwest Harris Co. C26/A110/X15425045465124412831303436524233373351336942536325NANA263555432Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23915374654221292927333456454050423271643556545202428344785521Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C45166565749252829323438714038504233846860626946232425394980531Seabrook Friendship Park C45
Houston Bayland Park C53/A146 165657058232829263128548456466045694373648046202525435274601Houston Bayland Park C53/A146
Conroe Relocated C78/A321152374655396760574039374638333832393755475351373330293762501Conroe Relocated C78/A321
Manvel Croix Park C84169868431NA2625263134665248564340593753647842192329496389741Manvel Croix Park C84
Clinton C403/C304/AH113 349565454242427223023486048425137644894505848212627404275503Clinton C403/C304/AH113
Houston North Wayside C4051454640512429342825214149393340334645101464647222641334466481Houston North Wayside C405
Houston Monroe C406152727539191922212823544746464031553950455839162022364180491Houston Monroe C406
Lang C408255585871323335323125486650384636623997526258232826324362492Lang C408
Houston Croquet C409260717344222727263127577054584943614062548741212525435583662Houston Croquet C409
Houston Westhollow C410157646361282730313228478256456245653865617348232429405365621Houston Westhollow C410
Houston Texas Avenue C4111576164663328352838265776564155376449105586351232727375373541Houston Texas Avenue C411
Park Place C416155677949232528263525596863514641624875537747222327434583531Park Place C416
Sheldon C5511 NNANANANANANANANANANANANA27293327343345313533232226273148351Sheldon C551
Baytown Wetlands Center C5521 N22222513101112131512181114302915342830254026121516212646341Baytown Wetlands Center C552
Crosby Library C5531 N45424943283241443722384034374515NANANANANANANANANANANANANA1Crosby Library C553
West Houston C5541 N222223312422212124232330212426232823362833272323232323NANA1West Houston C554
La Porte Sylvan Beach C5561 N5639NANANANANANANANANA3635454529685561516543202225424168471La Porte Sylvan Beach C556
Mercer Arboretum C5571 N22192222122227231510172019192116202030222526181721162030231Mercer Arboretum C557
Tom Bass C5581 N50687534191920202622544141463929503343496033151619374680541Tom Bass C558
Katy Park C5591 N43464655322518182420336644394345513141435848243935263548471Katy Park C559
Atascocita C5601 N39363540264547453722353934303126323664344242262336223657391Atascocita C560
Meyer Park C5611 N41404047203735312319304337312924312759384451253127213344421Meyer Park C561
Bunker Hill Village C5621 N57595862222423232819447942355337623677586348192322375067571Bunker Hill Village C562
Huffman Wolf Road C5631 N42373842242947454218343929333428353246354639211928243667461Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N495553503133353333304648494153375251104446150202425323878471HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N48455447283037363832384942425235555876495844212430333967501Wallisville Road C617
Danciger C618 1 N75674428191917152225433923373747312534476434151621356060811Danciger C618
Texas City 34th St. C620 1 N576073432730303335426845414345359041605967472426274473107721Texas City 34th St. C620
UH Moody Tower C6951 N60677055272930303732638260466141685196637752242629435683601UH Moody Tower C695
U of H-Sugarland C6961 N677610449272824272729526849705857503758539745252228132872741U of H-Sugarland C696
UH Coastal Center C6971 N537360312324272731408744354041335229596261421719244168100921UH Coastal Center C697
UH WG Jones Forest C6981 N53484753386557543837414645353929413556505556433940304463591UH WG Jones Forest C698
UH West Liberty C6991 N4337404125273838372234383329322735NA36364535222136223656421UH West Liberty C699
Lynchburg Ferry C1015/A165 141425642262929313334414233364229494280426542212125293871421Lynchburg Ferry C1015/A165
Lake Jackson C1016 171616631252422212832484933393848292440486042191827306666851Lake Jackson C1016
Baytown Garth C1017147435044262735343830354640405233525674475842182228313763481Baytown Garth C1017
Galveston 99th St. C1034/A320/X18315471NA62293027343743785241424337562853566244192329405286651Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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San Antonio
San Antonio Northwest C23266597349282729333045655058505366535145576855382730283049532San Antonio Northwest C23
Camp Bullis C58 163486149303133423645546049475665595556626858423331303257511Camp Bullis C58
Calaveras Lake C59157495144282325272544514637434149333331385443352627303690691Calaveras Lake C59
Elm Creek Elementary C5011 N65575340262527282848634348485062362831395947352528263542661Elm Creek Elementary C501
Fair Oaks Ranch C5021 N52426045283031393641475748425150554554596055403128242844451Fair Oaks Ranch C502
Bulverde Elementary C5031 N60466045302933433445496245475355515356596152423129263241451Bulverde Elementary C503
New Braunfels Airport C5041 N46494339232122232139464230363941333028434437312025182834591New Braunfels Airport C504
City of Garden Ridge C5051 N63595542272426302752554849465461454538515849392527273449531City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N48454641242226262537445035374351332631314940332228203449551Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N50444438252122242243454133383744302926334838312223212979591Heritage Middle School C622
CPS Pecan Valley C6781 N57516040262123262248584141414150364233385341322326242573511CPS Pecan Valley C678
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C4255645645272323212024504438363939212023395952322227283845652Corpus Christi West C4
Corpus Christi Tuloso C21151655438232123212130475041364038242330435638312329293946611Corpus Christi Tuloso C21
Victoria C87149534938232123262828435236445234322835465834272232334260711Victoria C87
Inez C6091 N50544736222223232528384935445634302638445734272031353844641Inez C609
Holly Road C6601 N72766553322727242227575241414446252325446961372633334555801Holly Road C660
Violet C6641 N6075674126242524NA28525249444746252525536144312532354553681Violet C664
Ingleside C6851 N49624939282422192025513729323435212223325738342328283842581Ingleside C685
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP143144484935282224222326303739353436242232324554282424262842561Mission C43/AP143
Brownsville C80/AGP1801NA334835261720191919252826293022232317264761262324243142531Brownsville C80/AGP180
Harlingen Teege C1023145544637262022232526264531283129252532264647302627283343571Harlingen Teege C1023
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P244148564628251924242620332826293433272629293950312725222646501Laredo 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.