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Peak Daily One-Hour Ozone Averages for November 2018

The table below lists the peak daily one-hour ozone concentrations measured in November 2018 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 SitePOCNovember 2018POCMonitoring Site
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 237444531402924263032222532404443432Ft. Worth Northwest C13/AH302
Keller C17235434730393728283135262631404444472Keller C17
Frisco C31/C680137414927424529283339272231383843491Frisco C31/C680
Midlothian OFW C52/A137139455135373026263239272530364145491Midlothian OFW C52/A137
Denton Airport South C56/A163/X157137424731405027272836232530384545481Denton Airport South C56/A163/X157
Arlington Municipal Airport C61138445032382827263039262631384042491Arlington Municipal Airport C61
Dallas North No.2 C63/C679137434932414027283038262331384243481Dallas North No.2 C63/C679
Rockwall Heath C69137424731353827273039242330374043441Rockwall Heath C69
Grapevine Fairway C70/A301/X182138435129403928263234252530384243471Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X071139464938383929263340242632384447481Kaufman C71/A304/X071
Granbury C73/C681139464331414324263539242937435143421Granbury C73/C681
Eagle Mountain Lake C75 140464633424028283534272835434950481Eagle Mountain Lake C75
Parker County C76138474332424526263435262937435246441Parker County C76
Cleburne Airport C77/C6821414751344042NA24NANANA2836454445521Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 338424932393429283235242432374140483Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C402142NA4936403329283339242634404346501Dallas Executive Airport C402
Greenville C1006/A198136414729434228273137252630384345471Greenville C1006/A198
Pilot Point C1032138395128414728293241272432383743501Pilot Point C1032
Italy C1044/A323141444837352622223440282430384552471Italy C1044/A323
Corsicana Airport C1051143455138454321263437363530364652501Corsicana Airport C1051
AreaMonitoring SitePOCNovember 2018POCMonitoring Site
Longview C19/A127/C644233444840303921203231343225374548452Longview C19/A127/C644
Tyler Airport Relocated C8213747NANA314224243437343227394553481Tyler Airport Relocated C82
Karnack C85/AFHP303126394538243821212932312523334945441Karnack C85/AFHP303
AreaMonitoring SitePOCNovember 2018POCMonitoring Site
El Paso-Juarez
El Paso UTEP C12/A125/X151/G125241454151424141373541443935403341382El Paso UTEP C12/A125/X151/G125
Ascarate Park SE C37/A332/A172/X159140413946393838353537493839303230351Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 143484452444445423239513937313440411Chamizal C41/AH126
Socorro Hueco C49/F312140453945424144383335433835333144381Socorro Hueco C49/F312
Skyline Park C72144504356444648453544503741344139421Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N43464741393450483033293641393537413BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C414/F514141494048444445403438493739384036401Ivanhoe C414/F514
AreaMonitoring SitePOCNovember 2018POCMonitoring Site
Waco Mazanec C1037138414733403220203334323531384147421Waco Mazanec C1037
Temple Georgia C1045139445332392526163534363836414154491Temple Georgia C1045
Killeen Skylark Field C1047141465231402826183835293938424655541Killeen Skylark Field C1047
AreaMonitoring SitePOCNovember 2018POCMonitoring Site
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 232434638282423242027202221394362512Beaumont-Downtown C2/A112/C2002
West Orange C9/A141229414740322834302127192324364268482West Orange C9/A141
Port Arthur West C28/A128/A228131454536292125262127242221364361481Port Arthur West C28/A128/A228
Hamshire C64/C654136464540322334332527242323384460481Hamshire C64/C654
SETRPC Port Arthur C6281 N32495041322232282328292320384067521SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C1654132514940322030302128272319385167481SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N31384844303328242227222425374367471SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C643136495043322629312330242724404768551SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 131434535282323242025212320353961481Nederland High School C1035
AreaMonitoring SitePOCNovember 2018POCMonitoring Site
Austin Northwest C3/A322238414633402441153332313234353946452Austin Northwest C3/A322
Audubon C38137414631392536113430262434364047421Audubon C38
Fayette County C6012 N38444233282627113128172530415248402Fayette County C601
Dripping Springs School C6141 N37424433393038133533312936384449441Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N39474630342433113332263133394446391CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N38424833402534163533313436394250461CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N35414332432638173431292933384049421Gorzycki Middle School C1603
Lockhart C16041 N2123251817131752118151820232332211Lockhart C1604
St. Edwards University C16051 N3641453431233214343329313433NANANA1St. Edwards University C1605
CAPCOG San Marcos Staples Road C16751 N37424738432937103235292836404051431CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N39444834412137163532353836413951441CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCNovember 2018POCMonitoring Site
Houston East C1/G31623643473723262871417132219284448432Houston East C1/G316
Houston Aldine C8/AF108/X150 242484738273236112124192626384555542Houston Aldine C8/AF108/X150
Channelview C15/AH115 339434336272528132122192524343250433Channelview C15/AH115
Northwest Harris Co. C26/A110/X15424445463728312982627182629404552472Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP239139444538292827262024202424344056491Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C45138454539302223272224272123334956491Seabrook Friendship Park C45
Houston Bayland Park C53/A146 13743363818212391619142024344146421Houston Bayland Park C53/A146
Conroe Relocated C78/A321144455140304531112926272730414757551Conroe Relocated C78/A321
Manvel Croix Park C84142464640262322232123182526364755481Manvel Croix Park C84
Clinton C403/C304/AH113 337364135232423132223192120333243453Clinton C403/C304/AH113
Houston North Wayside C4051333337311922259202118222130284111Houston North Wayside C405
Houston Monroe C406132383731222220191717151920293442381Houston Monroe C406
Lang C40823742433724282881720162325364150422Lang C408
Houston Croquet C4092384343372422241717211722233543NANA2Houston Croquet C409
Houston Westhollow C410140454337252526142222142325374550451Houston Westhollow C410
Park Place C416135404236252626201820192221323650461Park Place C416
Baytown Wetlands Center C5521 N31333728161311151419161820293541361Baytown Wetlands Center C552
Crosby Library C5531 N1921221512161NANANANA2123333348411Crosby Library C553
La Porte Sylvan Beach C5561 N2223271913NANANANANANANANANANANANA1La Porte Sylvan Beach C556
Katy Park C5591 N3233342718141991719141618283638351Katy Park C559
Atascocita C5601 N24NANANA16262271517141920282738371Atascocita C560
Meyer Park C5611 N2425272115181661617131517232729281Meyer Park C561
Huffman Wolf Road C5631 N2023231716231981211101314191923231Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N39414334253128151922212523353355481HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N47515042333333262628242931424459511Wallisville Road C617
Danciger C618 1 N40424241231819222128202227393949441Danciger C618
Texas City 34th St. C620 1 N45505042361971302831262626384658501Texas City 34th St. C620
UH Moody Tower C6951 N42484740282932122024182526394256501UH Moody Tower C695
UH WG Jones Forest C6981 N44434938294031102725252629394556551UH WG Jones Forest C698
UH West Liberty C6991 N38454733284136142223172327363848451UH West Liberty C699
Lynchburg Ferry C1015/A165 131384438282425201923192322323850451Lynchburg Ferry C1015/A165
Lake Jackson C1016 142434647341819282231212527415153441Lake Jackson C1016
Baytown Garth C1017140464939273130242325212628384060481Baytown Garth C1017
Galveston 99th St. C1034/A320/X183141494945382225312528332324344661501Galveston 99th St. C1034/A320/X183
Oyster Creek C1607 1 N44474849371919292532222428425261501Oyster Creek C1607
AreaMonitoring SitePOCNovember 2018POCMonitoring Site
San Antonio
San Antonio Northwest C23237404330443137133333253038414648412San Antonio Northwest C23
Camp Bullis C58 137394531443437123438273238444551421Camp Bullis C58
Calaveras Lake C59139454539353136143440313136435053431Calaveras Lake C59
Elm Creek Elementary C5011 N36424130382831103235283037394848391Elm Creek Elementary C501
Fair Oaks Ranch C5021 N34384329413835113335253036404449401Fair Oaks Ranch C502
Bulverde Elementary C5031 N35394530423237113435253037404250421Bulverde Elementary C503
New Braunfels Airport C5041 N36424535403236113334272835394549NA1New Braunfels Airport C504
City of Garden Ridge C5051 N36394332403036163433313137414247421City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N34454529343036113132252633374452271Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N37444335352833103135293036424750401Heritage Middle School C622
CPS Pecan Valley C6781 N354141313825NANANANANANANANANANANA1CPS Pecan Valley C678
Government Canyon C16101 N33374127393531113033232836414448391Government Canyon C1610
AreaMonitoring SitePOCNovember 2018POCMonitoring Site
Corpus Christi-Victoria
Corpus Christi West C4243474638372523202635192638464952422Corpus Christi West C4
Corpus Christi Tuloso C21140434134302524202532192535434541381Corpus Christi Tuloso C21
Victoria C87140514437312629182732162530424745421Victoria C87
Holly Road C6601 N47555249463128283339263141485353471Holly Road C660
Violet C6641 N47484737332728212836222742484843391Violet C664
AreaMonitoring SitePOCNovember 2018POCMonitoring Site
Lower Rio Grande Valley
Mission C43/AP1431354239403231252222241921384043NANA1Mission C43/AP143
Harlingen Teege C1023137444437252723222026212434424850391Harlingen Teege C1023
AreaMonitoring SitePOCNovember 2018POCMonitoring Site
Laredo Vidaurri C44/AFGP144/P244139584230333635261936242439434644371Laredo 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
  • 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.