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Peak Daily One-Hour Ozone Averages for November 2020

The table below lists the peak daily one-hour ozone concentrations measured in November 2020 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 2020POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 242455052434848373643324742284039465145393421222Ft. Worth Northwest C13/AH302
Keller C17238434751425049343837344544263842485045383524242Keller C17
Frisco C31/C680140375351465753363935365843313739545048383624271Frisco C31/C680
Midlothian OFW C52/A137140404845424841343338294947304144494943373530271Midlothian OFW C52/A137
Denton Airport South C56/A163/X157139395353485356394038345246293942485248434026231Denton Airport South C56/A163/X157
Arlington Municipal Airport C61141455048435247353742355147293843495245403523241Arlington Municipal Airport C61
Dallas North No.2 C63/C679138395049455548353738355548313737524946353323261Dallas North No.2 C63/C679
Rockwall Heath C69135394647394742303033364441283739494541353224281Rockwall Heath C69
Grapevine Fairway C70/A301/X182138425047425150343637315144283736464744373426241Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X071136354645364336292835394234283535484042343323261Kaufman C71/A304/X071
Granbury C73/C681141414649424150353837434343274143455245373323241Granbury C73/C681
Eagle Mountain Lake C75 140475253475053403942375044304046495650413625251Eagle Mountain Lake C75
Parker County C76140465052494157373937454548284044495248403425261Parker County C76
Cleburne Airport C77/C682144445055444851363642494951324042485349403423251Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 339384547424947353536325244293939464844343124253Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C402144485451485750374041285650324344535448403727291Dallas Executive Airport C402
Greenville C1006/A198137405149394643303437444941323845524749393525321Greenville C1006/A198
Pilot Point C1032139355351505653364136415643303738524947394026261Pilot Point C1032
Italy C1044/A323141425250425343363743465638314245505044373625251Italy C1044/A323
Corsicana Airport C1051139435253464941343838454746393944484947393626231Corsicana Airport C1051
AreaMonitoring SitePOCNovember 2020POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644239494752445241262731434954393834504343344035352Longview C19/A127/C644
Tyler Airport Relocated C82140444849435541293031454553384146585044373926391Tyler Airport Relocated C82
Karnack C85/AFHP303137334854434734212430404148353640394147254026341Karnack C85/AFHP303
AreaMonitoring SitePOCNovember 2020POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X151/G125251556557415251433838394450445036375156635652342El Paso UTEP C12/A125/X151/G125
Ascarate Park SE C37/A332/A172/X159148505755414843364039374043414539364155555545271Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 144475352313642403538373940414136283529514645321Chamizal C41/AH126
Socorro Hueco C49/F3121495157584251493339424749494347414043NA495148371Socorro Hueco C49/F312
Skyline Park C72148576149404950434443424649445042425056565247381Skyline Park C72
Ivanhoe C414/F514148505656414848384141424447444539384253454842341Ivanhoe C414/F514
AreaMonitoring SitePOCNovember 2020POCMonitoring Site
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Waco
Waco Mazanec C1037144465652505750374145465225254449535646393631251Waco Mazanec C1037
Temple Georgia C1045149455454515048393741475539333446475547413529241Temple Georgia C1045
Killeen Skylark Field C1047150445256434645363940465137334044415549453630241Killeen Skylark Field C1047
AreaMonitoring SitePOCNovember 2020POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 246394756534953343233365955444042444345354548472Beaumont-Downtown C2/A112/C2002
West Orange C9/A141244385951545250353239336254404140414141354845352West Orange C9/A141
Port Arthur West C28/A128/A228147394348485038333234354855454045494344384150411Port Arthur West C28/A128/A228
Hamshire C64/C6541474147505064NANA2826325056454144494442364241421Hamshire C64/C654
SETRPC Port Arthur C6281 N494247524748403419NANANANANANANANANANANANANANA1SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C16541NANA4546484138353235444853424039424544394254421SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N52416657644756353246397159474440424644375047391SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C643149415051495943333436365956454246NA2329222632221SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 145364548485742333234346155433940434141344147401Nederland High School C1035
AreaMonitoring SitePOCNovember 2020POCMonitoring Site
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Austin
Austin North Hills Drive C3/A322260435853514652383937454837314245475146393536302Austin North Hills Drive C3/A322
Audubon C38157486056514754374040464738324344485249403632301Audubon C38
Dripping Springs School C6141 N65526663584653464845605645405156616260514039NA1Dripping Springs School C614
CAPCOG Lake Georgetown C6901 N544554554745483838384347373041454652454134NANA1CAPCOG Lake Georgetown C690
Lockhart C16041 N60476255464649363736454736295356505044393440311Lockhart C1604
St. Edwards University C16051 N5640564945404333333541413227413944474334NANANA1St. Edwards University C1605
CAPCOG Bastrop CAMS16121 N554756514550453636344448332841454753NANANANANA1CAPCOG Bastrop CAMS1612
CAPCOG Elgin C16131 N59485952424948413637435030304449505646NANANANA1CAPCOG Elgin C1613
CAPCOG East Austin C16191 N60456155504749383837454636304345485349403537291CAPCOG East Austin C1619
CAPCOG San Marcos Staples Road C16751 N59436256514545383833424435304346505349433637361CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N57415451504648363539425035304223NANANANANANANA1CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCNovember 2020POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G316249345853455858383635405446363742424943343746272Houston East C1/G316
Houston Aldine C8/AF108/X150 254465556526156493811NA6247374143456844364348222Houston Aldine C8/AF108/X150
Channelview C15/AH115 348374645455645362639394543364939434341323548313Channelview C15/AH115
Northwest Harris Co. C26/A110/X154251426458475244463931516137383944457144384939192Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP239154424954485945363135475353385046535945363966351Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C45146404341385439292626334745313743474640313249331Seabrook Friendship Park C45
Houston Bayland Park C53/A146 157465454507867413536525641354344486144353752241Houston Bayland Park C53/A146
Conroe Relocated C78/A321151406272595043474934475252434542455753414147231Conroe Relocated C78/A321
Manvel Croix Park C84157575249485448403337625838314245515542353957231Manvel Croix Park C84
Clinton C403/C304/AH113 353416147445862383337454650364044475141333652293Clinton C403/C304/AH113
Houston North Wayside C405147375047445351433533365338331637374040303543211Houston North Wayside C405
Houston Monroe C406145344043434940323034444441313637424539313247211Houston Monroe C406
Lang C408254419057506860443837537042404043454744344451222Lang C408
Houston Croquet C409251384750495857403334455438323844465241353748232Houston Croquet C409
Houston Westhollow C410151414847437455383130484935343538405038313439191Houston Westhollow C410
Park Place C416150364847465261363336434942353843445241333449231Park Place C416
Baytown Wetlands Center C5521 N47384141385137272329394348343941474336293149271Baytown Wetlands Center C552
Crosby Library C5531 N45355248434544332642345347334039424941NANANANA1Crosby Library C553
West Houston C5541 N52446849436549383332515235354243455040334239201West Houston C554
La Porte Sylvan Beach C5561 N53444948476043343131385253414247505046373951391La Porte Sylvan Beach C556
Mercer Arboretum C5571 N45385451494942414030405646293741395244364140171Mercer Arboretum C557
Tom Bass C5581 N53504847485545383238585643324043485142343754251Tom Bass C558
Katy Park C5591 N55475149447254403332525334324247505342374640241Katy Park C559
Atascocita C5601 N42395551454543343335345746313635384941313736171Atascocita C560
Meyer Park C5611 N49424956495245473932486938344145456645374544201Meyer Park C561
Bunker Hill Village C5621 N49425648436451362929485132253739404838313544201Bunker Hill Village C562
Huffman Wolf Road C5631 N51395354494950383347415650384739435246384344231Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N554259535163594036414757503848485155463840531931HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N54435252485749363241455357494644495246384055291Wallisville Road C617
Texas City 34th St. C620 1 N57515253536348393436445261554947686055424359401Texas City 34th St. C620
UH Moody Tower C6951 N53425252496662393641435646354144475344363850231UH Moody Tower C695
UH WG Jones Forest C6981 N51405366565244474533475445404445445650414046201UH WG Jones Forest C698
UH West Liberty C6991 N46344850454546342845364947354135394841324140221UH West Liberty C699
Lynchburg Ferry C1015/A165 1433442454352413227273746523737444446NA333550331Lynchburg Ferry C1015/A165
Lake Jackson C1016 166475048475146363231504140305242465242343745351Lake Jackson C1016
Baytown Garth C1017152395052475649363341435159484541485246394053291Baytown Garth C1017
Galveston 99th St. C1034/A320/X183155515754525251373538435059524242485349414246391Galveston 99th St. C1034/A320/X183
UH Smith Point C16061 N494650474860483429NANANANANANANANANANANANANANA1UH Smith Point C1606
Oyster Creek C1607 1 N73576256555552424240605354465752545954444754431Oyster Creek C1607
UH Launch Trailer C16111 N5237NANANANANANANA149NANANANA146NANA21NANANA1UH Launch Trailer C1611
AreaMonitoring SitePOCNovember 2020POCMonitoring Site
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San Antonio
San Antonio Northwest C23256475855464647403430484138294148515649463940442San Antonio Northwest C23
Camp Bullis C58 162506464555353454338555044354754586356554442491Camp Bullis C58
Calaveras Lake C59161457053454648383825464438314548506049453835441Calaveras Lake C59
Elm Creek Elementary C5011 N56435550414141363324463632284036NANANANANANANA1Elm Creek Elementary C501
Fair Oaks Ranch C5021 N494452524343473835324439382937444652464531NANA1Fair Oaks Ranch C502
Bulverde Elementary C5031 N50445452464042363528424136283844465346453232151Bulverde Elementary C503
New Braunfels Airport C5041 N56406153454142373531394334263943465446413334331New Braunfels Airport C504
City of Garden Ridge C5051 N55415952473942363531424233294040485447413335401City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N53426251464043363525404133263743475231NANANANA1Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N59406646383941343421414034274044465043383231381Heritage Middle School C622
CPS Pecan Valley C6781 N53375443393535292916373427223641434738343012NA1CPS Pecan Valley C678
Government Canyon C16101 N484350473843433532324537342736444546423919NANA1Government Canyon C1610
AreaMonitoring SitePOCNovember 2020POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C4255445345414051373335324227254149504943413737422Corpus Christi West C4
Corpus Christi Tuloso C21154465648434148383434344528254452524744423737431Corpus Christi Tuloso C21
Victoria C87154465149454851373538434430274252495241413639441Victoria C87
AreaMonitoring SitePOCNovember 2020POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP1431NANANANA444341323041422927264241504344373739431Mission C43/AP143
Harlingen Teege C1023152444645393638383635303432294640544346423736401Harlingen Teege C1023
AreaMonitoring SitePOCNovember 2020POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P244150484646403939343627403229334555534743413433431Laredo 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.