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Daily Maximum Eight-Hour Ozone Averages for November 2017

The table below lists the peak daily maximum eight-hour ozone concentrations measured in November 2017 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 2017POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 2314227292828179NANV362613342718273333372931362Ft. Worth Northwest C13/AH302
Keller C17234413030283116142430402916372723273537393332412Keller C17
Frisco C31/C680135473034322817101939392919NV2825313536393430371Frisco C31/C680
Midlothian OFW C52/A1371344123322729181111333831NVNV3127323633403230371Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571313924282626NANVNANV342917342619253234333229361Denton Airport South C56/A163/X157
Arlington Municipal Airport C6113241232925261691130372418382721303231373127331Arlington Municipal Airport C61
Dallas North No.2 C63/C6791334426323026169NV35382417392722313437403128351Dallas North No.2 C63/C679
Rockwall Heath C691NANANANANANANV816403928193728282737423937NV381Rockwall Heath C69
Grapevine Fairway C70/A301/X182130452930293017122030362816372420293434383529361Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X07113243263030251871640382820403239313636403631391Kaufman C71/A304/X071
Granbury C73/C681140432730282724122029382520332727293737413534421Granbury C73/C681
Eagle Mountain Lake C75 139453032293019122530402817362725303636413533431Eagle Mountain Lake C75
Parker County C76141442833292921112628362923322632313737413732421Parker County C76
Cleburne Airport C77/C6821363826312731NANV1733412720403031293738423433401Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3324024322825159NV31382715382724303737393128363Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C402132392130262416812NANANANV382725313434393127351Dallas Executive Airport C402
Greenville C1006/A19813245333030251452341352616362922303435393729361Greenville C1006/A198
Pilot Point C1032135472734322517122538383021422623303535363531351Pilot Point C1032
Italy C1044/A32313242233027291691535383021413238313638443929401Italy C1044/A323
Corsicana Airport C105113440253029351781340393623443537323839443530401Corsicana Airport C1051
AreaMonitoring SitePOCNovember 2017POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644233322924263013113142303220323725383336403035332Longview C19/A127/C644
Tyler Airport Relocated C82135363428283514113345353217333534333439393435391Tyler Airport Relocated C82
Karnack C85/AFHP303130322523242913113038322218313519363234352833321Karnack C85/AFHP303
AreaMonitoring SitePOCNovember 2017POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X151235302823292720263034363641293629284143332537382El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X159130272014272316252826293437253632224041282431301Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 138333020313022232828373537283029324144372737341Chamizal C41/AH126
Socorro Hueco C49/F312132292616272320242528333133293437303941293036361Socorro Hueco C49/F312
Skyline Park C72139353426323224313336413745333938374344413240391Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N40373435353029272730343533344638394340364342393BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C414131262315242318222423302931293133263635332933361Ivanhoe C414
AreaMonitoring SitePOCNovember 2017POCMonitoring Site
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Waco
Waco Mazanec C103713143293130381691032423929363237323435413831391Waco Mazanec C1037
Temple Georgia C1045131484334314222121135464237403438374142454240441Temple Georgia C1045
Killeen Skylark Field C1047137454034283723111532413737423338373839423939421Killeen Skylark Field C1047
AreaMonitoring SitePOCNovember 2017POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2NV27262626292982141443832374139383435342033352Beaumont-Downtown C2/A112/C2002
West Orange C9/A141231NV3028292828102139473330404241403237392635342West Orange C9/A141
Port Arthur West C28/A128/A228131272727272726102439443935374242393236382635351Port Arthur West C28/A128/A228
Hamshire C64/C65413230302828323192545454138424343403636402635351Hamshire C64/C654
SETRPC 40 Sabine Pass C640/C1654136323330333129102437453836394342413339423638361SETRPC 40 Sabine Pass C640/C1654
SETRPC 43 Jefferson Co Airport C6431282626252526259213640343032NVNV333137392737371SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 132313229292929102240443733394341403436392237351Nederland High School C1035
AreaMonitoring SitePOCNovember 2017POCMonitoring Site
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Austin
Austin Northwest C3/A322235373526273322121331373837373138323938423637392Austin Northwest C3/A322
Audubon C38136423528253121131228352935373238343938433737361Audubon C38
Fayette County C6012 N353230282830NVNANANANANANANANANANANANANANANANA2Fayette County C601
Dripping Springs School C6141 N4039362930352416NVNANANANANANANANANANANANANANA1Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N322625222428208928363438NVNANANANANANANANANA1CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N374542322937221217324237NVNANANANANANANANANANA1CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N3132322023312012NVNANANANANANANANANANANANANANA1Gorzycki Middle School C1603
Lockhart C16041 N413436293435321414NVNANANANANANANANANANANANANA1Lockhart C1604
St. Edwards University C16051 N3128282123261710826343433312631253535353334361St. Edwards University C1605
CAPCOG San Marcos Staples Road C16751 N40323224303328138NVNANANANANANANANANANANANANA1CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N33353326263220NVNANANANANANANANANANANANANANANA1CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCNovember 2017POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G31622827262827312971535424234323830343332352830352Houston East C1/G316
Houston Aldine C8/AF108/X150 231312932313134112140484442354338373837383537372Houston Aldine C8/AF108/X150
Channelview C15/AH115 32626212326302692035413934303727363636342537383Channelview C15/AH115
Northwest Harris Co. C26/A110/X154233313230303430132138514635464040363937393738392Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23912827262826282872139454035374138363436403637381Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4512826262526272762040473534404037343435422936331Seabrook Friendship Park C45
Houston Bayland Park C53/A146 129252728262828101841465044444139363938403839391Houston Bayland Park C53/A146
Conroe Relocated C78/A321131333634303530132339504333464847384038423538391Conroe Relocated C78/A321
Manvel Croix Park C8413329NV303133NV1120NV48474147NV40364040433942431Manvel Croix Park C84
Clinton C403/C304/AH113 3212022242221209203644423437373429353635NV37353Clinton C403/C304/AH113
Houston North Wayside C4051NANV212423222381832404035323131263334332632331Houston North Wayside C405
Houston Monroe C40612725232625262871433403832323532333133333031331Houston Monroe C406
Lang C40822523262726282881635424340373632333635323333362Lang C408
Houston Croquet C40922826252625272691637424536413837333534383636362Houston Croquet C409
Houston Westhollow C410131282829283030122040475843454241354038393837371Houston Westhollow C410
Park Place C41612726262726292971537444436363835343333373433331Park Place C416
Baytown Wetlands Center C5521 N159912111413615313326252627221928293325NVNA1Baytown Wetlands Center C552
La Porte Sylvan Beach C5561 N2424202024262372041473535424038323536432837381La Porte Sylvan Beach C556
Tom Bass C5581 N242223222123226726323128363331322715322522161Tom Bass C558
Katy Park C5591 N2421192121222191331384335353234263232323331301Katy Park C559
Atascocita C5601 N2321192423262651938454040364335303435403037361Atascocita C560
Meyer Park C5611 N1918191918201881226333025302725242626262427271Meyer Park C561
Clear Brook High School C5701 N28252527262827820NVNV3836373833363538403538261Clear Brook High School C570
Clear Creek High School C5711 NNV202122252526721NVNV3532333531313534332636291Clear Creek High School C571
HRM-3 Haden Road C603/A114 1 N2526252726282792138NANANV314034333536363035381HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N27262428272929102439NANANV353938343739393341391Wallisville Road C617
Danciger C618 1 N27232325242625121535NANA34383433333538373640381Danciger C618
Texas City 34th St. C620 1 NNV303030293130123044NANANV444641393940453746411Texas City 34th St. C620
UH Moody Tower C6951 N28252628272928818NVNV443737403634353639NVNANA1UH Moody Tower C695
U of H-Sugarland C6961 NNANA29NVNV31311219NVNV49454442423738NV43NVNANA1U of H-Sugarland C696
UH Coastal Center C6971 N30252624242626720NVNV3534394041343537403440241UH Coastal Center C697
UH WG Jones Forest C6981 NNVNANANANANANANANANANANANANANANANANANANANANANA1UH WG Jones Forest C698
UH West Liberty C6991 N292825NV283333822NVNV3932374238NV343638NVNANA1UH West Liberty C699
Lynchburg Ferry C1015/A165 125282424262925718404235343437NV363331382430321Lynchburg Ferry C1015/A165
Lake Jackson C1016 132272728272928111741463938394038383843303942431Lake Jackson C1016
Baytown Garth C1017128262631283134102445454140384441343738413540361Baytown Garth C1017
Galveston 99th St. C1034/A320/X183137292930272727NVNV45504038464341363637423540371Galveston 99th St. C1034/A320/X183
Oyster Creek C1607 1 N322628282729281120NVNANV39414342363541423843421Oyster Creek C1607
AreaMonitoring SitePOCNovember 2017POCMonitoring Site
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San Antonio
San Antonio Northwest C23241333428303336211625322340313434293938423736402San Antonio Northwest C23
Camp Bullis C58 14234372732363422162435253832343531393843NVNANA1Camp Bullis C58
Calaveras Lake C59142353230303332181028382441373735313841453937401Calaveras Lake C59
Elm Creek Elementary C5011 N413128252830NVNANANANANANANANANANANANANANANANA1Elm Creek Elementary C501
Fair Oaks Ranch C5021 N4333402728NVNANANANANANANANANANANANANANANANANA1Fair Oaks Ranch C502
Bulverde Elementary C5031 N4235392832NVNANANANANANANANANANANANANANANANANA1Bulverde Elementary C503
New Braunfels Airport C5041 N373131242832NVNANANANANANANANANANANANANANANANA1New Braunfels Airport C504
City of Garden Ridge C5051 N383030243031NVNV1323332438NVNANANANANANANANANA1City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N393333263134NVNANANANANANANANANANANANANANANANA1Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N3730272525262815721322136303031273235NV3433381Heritage Middle School C622
CPS Pecan Valley C6781 N33302723272833NVNANANANANANANANANANANANANANANA1CPS Pecan Valley C678
Government Canyon C16101 N403331272832312116183222373131NVNANANANANANANA1Government Canyon C1610
AreaMonitoring SitePOCNovember 2017POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C423525252625282611NV393934NV42353032333937NV42402Corpus Christi West C4
Corpus Christi Tuloso C2113528262727292712834362837403329303338333639381Corpus Christi Tuloso C21
Victoria C87132272425262826111027363139353128283236333336381Victoria C87
Inez C6091 N292726282730281514324237434037NVNANANANANANANA1Inez C609
Holly Road C6601 N241615151517152327272128292218202127262527291Holly Road C660
Violet C6641 N38272528293128131040402441353124233439344142351Violet C664
Ingleside C6851 N2620252326272211835352637373126292831343734291Ingleside C685
AreaMonitoring SitePOCNovember 2017POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP14313325212325242423109162525332722233135233432381Mission C43/AP143
Brownsville C80/AGP1801NV26252627272620726292525NVNV29283241NVNANANA1Brownsville C80/AGP180
Harlingen Teege C102313027262928292623719302428353531293040323837431Harlingen Teege C1023
AreaMonitoring SitePOCNovember 2017POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P24414230252321232611511132219242727253135342829371Laredo 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.