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Daily Maximum Eight-Hour Ozone Averages for November 2019

The table below lists the peak daily maximum eight-hour ozone concentrations measured in November 2019 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 SitePOCNovember 2019POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 233355146103324213243243026333040503745362Ft. Worth Northwest C13/AH302
Keller C17234355044132921223243252927323543463547342Keller C17
Frisco C31/C680136365248193721243347283228363944493145381Frisco C31/C680
Midlothian OFW C52/A137138385047173824183545282930322744533949321Midlothian OFW C52/A137
Denton Airport South C56/A163/X157133344945NV2820243544283131363643484143351Denton Airport South C56/A163/X157
Arlington Municipal Airport C611313348441637NV162942252526272437473546291Arlington Municipal Airport C61
Dallas North No.2 C63/C679134345046143625213245272927323541513243351Dallas North No.2 C63/C679
Rockwall Heath C69137345044204026253446293231383742513047351Rockwall Heath C69
Grapevine Fairway C70/A301/X182133354846142822233238283127333541503437301Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X071137394949NV4132273649313233374044564249351Kaufman C71/A304/X071
Granbury C73/C681136395041163021233239253229353843483648331Granbury C73/C681
Eagle Mountain Lake C75 13937544614NV18263545273332383747494449391Eagle Mountain Lake C75
Parker County C76137385244202619263439263232383945474252371Parker County C76
Cleburne Airport C77/C682139415452174426143453252827364252534254361Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 329324642123125203341272722302937502939233Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C4021373950481639NVNV3247303131343345543946311Dallas Executive Airport C402
Greenville C1006/A198135344847253821273445323032404042553545331Greenville C1006/A198
Pilot Point C1032134355248213124273445273328373945504148371Pilot Point C1032
Italy C1044/A323138425047174326213648292930323746524152311Italy C1044/A323
Corsicana Airport C1051138454952284431253852323231344045524055301Corsicana Airport C1051
AreaMonitoring SitePOCNovember 2019POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644234453743333824273547333330313738444157272Longview C19/A127/C644
Tyler Airport Relocated C82135464344293529273751383337NV4043554050411Tyler Airport Relocated C82
Karnack C85/AFHP30313441334432371927324427332927353441424591Karnack C85/AFHP303
AreaMonitoring SitePOCNovember 2019POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X151/G1252334339342844181335292119273740433533NV182El Paso UTEP C12/A125/X151/G125
Ascarate Park SE C37/A332/A172/X1591NVNANANV294018NVNANANANVNVNV413832301131Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 133404033264320113430201728313743323721141Chamizal C41/AH126
Socorro Hueco C49/F3121334248393242202335332324264248453535NVNA1Socorro Hueco C49/F312
Skyline Park C72135434340354321203534262426424847394032261Skyline Park C72
Ivanhoe C414/F514134384232343919223536242327424947353427131Ivanhoe C414/F514
AreaMonitoring SitePOCNovember 2019POCMonitoring Site
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Waco
Waco Mazanec C1037139465448244930143751283129293946514456311Waco Mazanec C1037
Temple Georgia C10451354450NV314124183851263326184145424455271Temple Georgia C1045
Killeen Skylark Field C1047134465453273930173748243327164145434454311Killeen Skylark Field C1047
AreaMonitoring SitePOCNovember 2019POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 230364145384527162847212825243737464763192Beaumont-Downtown C2/A112/C2002
West Orange C9/A141233364148374826173144233125243635384365212West Orange C9/A141
Port Arthur West C28/A128/A228131364047394429183247293126253537464959431Port Arthur West C28/A128/A228
Hamshire C64/C654132384448435030183349373128243739444762411Hamshire C64/C654
SETRPC Port Arthur C6281 N34394148NVNANANANANANANANANANANANANANANA1SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C1654133384248414632193349373228263740455561381SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N34384249395730203050253530NV4340465066191SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C643136404351415033193449303328284040515166401SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 131363947394625182945233123253637444661311Nederland High School C1035
AreaMonitoring SitePOCNovember 2019POCMonitoring Site
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Austin
Austin Northwest C3/A322232444946293622133347253220133741404850252Austin Northwest C3/A322
Audubon C38131465248313628123145243121123740414751251Audubon C38
Dripping Springs School C6141 N385460513640331439513037231643504554NVNA1Dripping Springs School C614
CAPCOG Lake Georgetown C6901 N3548575532432315385228352616414544NVNANA1CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N38535650354234153851303625164248475549251Gorzycki Middle School C1603
Lockhart C16041 N39505348374228124151253329184049485654221Lockhart C1604
St. Edwards University C16051 N31414639263322123042222918123040374345201St. Edwards University C1605
CAPCOG Bastrop CAMS16121 N33424543313925123145232826163138414550231CAPCOG Bastrop CAMS1612
CAPCOG Elgin C16131 N26323734243018112837182318122630333537171CAPCOG Elgin C1613
CAPCOG San Marcos Staples Road C16751 N40515432354229133948243323134048475654201CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N3950545235422418395528362621434648NVNANA1CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCNovember 2019POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G316229314231NV391392842192115142736384247172Houston East C1/G316
Houston Aldine C8/AF108/X150 233395234384921152948212718213640475048152Houston Aldine C8/AF108/X150
Channelview C15/AH115 32937413335412515NANANANV21213635464647223Channelview C15/AH115
Northwest Harris Co. C26/A110/X154231425236405123173148253121233640414660142Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP239133384539434926153448172820223742505060291Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C45133344239384723162439142624183439374452311Seabrook Friendship Park C45
Houston Bayland Park C53/A146 135425243445626152745242623182135435158321Houston Bayland Park C53/A146
Conroe Relocated C78/A321135405144384724193553233325263837464757361Conroe Relocated C78/A321
Manvel Croix Park C8413440473839492711314428262518NV4544NV55341Manvel Croix Park C84
Clinton C403/C304/AH113 329374336364221122943182615213437394246343Clinton C403/C304/AH113
Houston North Wayside C40512634442930401911284017241218303438413991Houston North Wayside C405
Houston Monroe C406131324237NVNA19102841252321152938444551271Houston Monroe C406
Lang C40822835453032401482744192414152938414853322Lang C408
Houston Croquet C409231374536374519112444252521173437445154332Houston Croquet C409
Houston Westhollow C410132424837395022152946272820203739455159321Houston Westhollow C410
Park Place C416133364438384618102744252518173238424755281Park Place C416
Sheldon C5511 N31384132334026163143193120233537495149211Sheldon C551
Baytown Wetlands Center C5521 N34374342404425153347212923233839525455381Baytown Wetlands Center C552
Crosby Library C5531 N35384642404724163148213128253837475063241Crosby Library C553
West Houston C5541 N31414935384821143246243019213639444959351West Houston C554
La Porte Sylvan Beach C5561 N34344442364624132545162925213640395143421La Porte Sylvan Beach C556
Mercer Arboretum C5571 N1122282425323138NVNVNANANV37414351121Mercer Arboretum C557
Tom Bass C5581 N3438463939472311284726262416NVNVNANANV381Tom Bass C558
Katy Park C5591 N31444936395121173344222917233639434755301Katy Park C559
Atascocita C5601 N31344438374424152948202923223334424450301Atascocita C560
Meyer Park C5611 N3039523638NVNANANANANANANV203541444655111Meyer Park C561
Bunker Hill Village C5621 N24NANA32322919122743202616173436364753291Bunker Hill Village C562
Huffman Wolf Road C5631 N36414943404828193350213228273939504766341Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N31354335364321113042192618193339434948151HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N35404545444732193449203221284141555562341Wallisville Road C617
Danciger C618 1 N37484731395133153444263028243843425356181Danciger C618
Texas City 34th St. C620 1 N3738474442NV3323335028343130404641NV64561Texas City 34th St. C620
UH Moody Tower C6951 N31384437364618123045292718203538465455321UH Moody Tower C695
UH WG Jones Forest C6981 N34415441395022183752233225244142525162251UH WG Jones Forest C698
UH West Liberty C6991 N36374540364622163146213027233837484661281UH West Liberty C699
Lynchburg Ferry C1015/A165 130294136354114112340162522202934484038251Lynchburg Ferry C1015/A165
Lake Jackson C1016 136444631405233123443262625223545424852411Lake Jackson C1016
Baytown Garth C1017134384445434730183348223021263939525261371Baytown Garth C1017
Galveston 99th St. C1034/A320/X183136364846415436202752373233273844476262491Galveston 99th St. C1034/A320/X183
UH Smith Point C16061 NNVNANANANANANANANANANANANANANANANANANANA1UH Smith Point C1606
Oyster Creek C1607 1 N25343629NV412572534211820NV3744425157391Oyster Creek C1607
AreaMonitoring SitePOCNovember 2019POCMonitoring Site
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San Antonio
San Antonio Northwest C232394658NV3137271436372532241739444652NV232San Antonio Northwest C23
Camp Bullis C58 13540564129362415343824322018374145NV48271Camp Bullis C58
Calaveras Lake C59140515440333727143641253327194052475143191Calaveras Lake C59
Elm Creek Elementary C5011 N384253372735211333332231271739444447NVNA1Elm Creek Elementary C501
Fair Oaks Ranch C5021 N34405842313625153638283221183641445451271Fair Oaks Ranch C502
Bulverde Elementary C5031 N33425644293425143540263320183741445350271Bulverde Elementary C503
New Braunfels Airport C5041 N35454840303628123541223022133543NVNV48161New Braunfels Airport C504
City of Garden Ridge C5051 N364651392734241331392332181738454649NVNA1City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N36434840323924103542242825143345415148201Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N38465037293623113438243024133542455246201Heritage Middle School C622
CPS Pecan Valley C6781 N39435138273320103436212723934NVNANANANA1CPS Pecan Valley C678
Government Canyon C16101 N31375036263119133132202821143440404746211Government Canyon C1610
AreaMonitoring SitePOCNovember 2019POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C4241494738314727113642362623194352404544302Corpus Christi West C4
Corpus Christi Tuloso C21141504837314827114044332525194452384442241Corpus Christi Tuloso C21
Victoria C87139464441334727123844312924224147455250221Victoria C87
AreaMonitoring SitePOCNovember 2019POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP14313845473227382393533292226274246394743251Mission C43/AP143
Harlingen Teege C1023137444535294025103537312326264445373943251Harlingen Teege C1023
AreaMonitoring SitePOCNovember 2019POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P244138505237293425112832252225243849425448211Laredo 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
  • The AQI for ozone is based on either the peak eight-hour running average since midnight OR the peak one-hour measurement since midnight.

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, 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.