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Peak Daily One-Hour Ozone Averages for January 2015

The table below lists the peak daily one-hour ozone concentrations measured in January 2015 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 SitePOCJanuary 2015POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 212103233272536303230191722233441404245613335353641312944382Ft. Worth Northwest C13/AH302
Keller C17211113231282635283231191622223038374145603735303338363447342Keller C17
Frisco C31/C680114162333292935293531231922233338394441594338343541373455421Frisco C31/C680
Midlothian OFW C52/A137111102932322235313131252121252840404145483833333241393656351Midlothian OFW C52/A137
Denton Airport South C56/A163/X157113143835282835303531221826243644434642614237363842414051341Denton Airport South C56/A163/X157
Arlington Municipal Airport C611883132301834303030241821232938384145443735323139383652351Arlington Municipal Airport C61
Dallas North No.2 C63/C679111102432272632293030231619212839394340614035323339343153401Dallas North No.2 C63/C679
Rockwall Heath C69114202134333440323834272023233238444452654639353542333859421Rockwall Heath C69
Grapevine Fairway C70/A301/X182114143133282837323532221924253340404340634137343440373052411Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X071117172333333037303333261722242738444349434236352740403956381Kaufman C71/A304/X071
Granbury C73/C68111293932313435323229192020243038394246563435333240424046401Granbury C73/C681
Eagle Mountain Lake C75 112143631302535313329181724213239404147583634313236343644331Eagle Mountain Lake C75
Parker County C76114114236363641373733242025263445464652693940373844444347361Parker County C76
Cleburne Airport C77/C682111103833342735333029222020193141404347634136343442424450361Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3109243428263431323422NA161928363744NA424237343142363355383Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C4021882329261832292930211618142634374044353833332937383251341Dallas Executive Airport C402
Greenville C1006/A198115201933323137333530231924263136424251594336353641334061411Greenville C1006/A198
Pilot Point C1032115182732282936283528221825253331394332553936343541383850331Pilot Point C1032
Italy C1044/A3231121527303228343028302420171927364041483237353232403840NA291Italy C1044/A323
Corsicana Airport C10511151323323331363132322421192526394443523737NA303442403956381Corsicana Airport C1051
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644217141330312835383333191922303545474752524435343943435864492Longview C19/A127/C644
Tyler Airport Relocated C82120141832383836373533262120323443484654NA4439363242424471541Tyler Airport Relocated C82
Karnack C85/AFHP303118151430343337373134282025273441484854514436314140414265491Karnack C85/AFHP303
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X151225264538302734272429313114202435394239414538403641333536322El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X159123173933312433272724252816223129293730354130353837333431321Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 126204735352230272231322712193236404540363932394140363237301Chamizal C41/AH126
Socorro Hueco C49/F312127254639332637282828343017242839364744434436354040304438341Socorro Hueco C49/F312
Skyline Park C72126334743373734312829333020243639414541394837424242413540351Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N1714NANANA3440302625273119212829424437444837364044393134543BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C414121194135333032282526282916203233374032303829353636353134301Ivanhoe C414
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Waco
Waco Mazanec C1037112143231333635312929242017173341424554413437323843414356391Waco Mazanec C1037
Temple Georgia C10451981926232428272628231918193239424556543037343944475056441Temple Georgia C1045
Killeen Skylark Field C1047114143635354338332631242021233542465054633140374446515056431Killeen Skylark Field C1047
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 219212427294335342229212018213243545348524734294547385953642Beaumont-Downtown C2/A112/C2002
West Orange C9/A141220191923273132332228232019212738484446524733284044375549532West Orange C9/A141
Port Arthur West C28/A128/A228118212225284034332331272119213139494546485434324247396053591Port Arthur West C28/A128/A228
Hamshire C64/C654118232328314536332428232319193044575349525236334548406466561Hamshire C64/C654
SETRPC Port Arthur C6281 N26313031303023231528292521253443534651515338344451436355541SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C1654122232226273733332629282320212938493943473935314048374951471SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N21212327294635352632262419213242514550554436304246405156581SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C6431NANANANANA1631312027221916182839454244474932293945365851601SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 120232326294334342427252118213237454748494934324247386152661Nederland High School C1035
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Austin
Austin Northwest C3/A32221092933254133312123191615162838394657532833304041404850452Austin Northwest C3/A322
Audubon C3811093233314034322626221617173131394655542935313542455351491Audubon C38
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G31621513928252530321622171413162836466454593139304541374759432Houston East C1/G316
Houston Aldine C8/AF108/X150 217171429252534332127201815243438505158594040324544386060452Houston Aldine C8/AF108/X150
Channelview C15/AH115 316131029271632312023171916183238444647503235304343355356433Channelview C15/AH115
Northwest Harris Co. C26/A110/X154225181729273434292425222215263344444655563432313940404956392Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP2391156527242531301924181716152935454246513941274138294766411Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C45119101329253231342525201719183043494741654445284646343765461Seabrook Friendship Park C45
Houston Bayland Park C53/A146 115141229242831322422181515203129455251533644304439375466411Houston Bayland Park C53/A146
Conroe Relocated C78/A321130231730353936352729242119283342475060623933324142405276421Conroe Relocated C78/A321
Manvel Croix Park C84116101331243532322423191814182834454753604345304442385568421Manvel Croix Park C84
Clinton C403/C304/AH113 31513928221831312022181515172934375338403139283534294554303Clinton C403/C304/AH113
Houston North Wayside C40511514825261329302023191414172724375347463037273134323950331Houston North Wayside C405
Houston Monroe C4061147824212726281621161513152629404546473740263938333856391Houston Monroe C406
Lang C408215171328242930321722191612212829454651543036294141375262382Lang C408
Houston Croquet C409216121329233630311822141713183128455053563947304640385366432Houston Croquet C409
Houston Westhollow C410115161428223231292421171714192834434948503440284137355151381Houston Westhollow C410
Houston Texas Avenue C41111411825212127301620161511172223415544432837273936314751351Houston Texas Avenue C411
Park Place C4161139925172528281521101312142727425150543743264139333963401Park Place C416
Sheldon C5511 N16141128291432312325181917202936425047483334293940345347401Sheldon C551
Baytown Wetlands Center C5521 N141042323262727212216NA13132226292728402928203029233442281Baytown Wetlands Center C552
Crosby Library C5531 N1512925282130312225171816183038434648564141284040355362411Crosby Library C553
West Houston C5541 N19171428223332282322201915212937454952553244314240375058401West Houston C554
La Porte Sylvan Beach C5561 N1810730273431342127211717173130434242554039304542364061371La Porte Sylvan Beach C556
Mercer Arboretum C5571 N19171125282831302126191715222834424149514035263738345352351Mercer Arboretum C557
Tom Bass C5581 N149825192628271521151413152528374046493741263836304361361Tom Bass C558
Katy Park C5591 N20171324242829252221181713222533383845442736263834334345341Katy Park C559
Atascocita C5601 N14131025262128281924171514182732394046483732253435314651321Atascocita C560
Meyer Park C5611 N22201629293033302227211915223036444552533533304039375155391Meyer Park C561
Bunker Hill Village C5621 N15151226222932291821171512202926434648492741274036354858371Bunker Hill Village C562
Huffman Wolf Road C5631 N14NA11242619NANANA26192017213242454252614532294041375170401Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N17141030262333322026201714183341475555643841324644375257451HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N20141133353138352729222521223948555054664442364849416672471Wallisville Road C617
Danciger C618 1 N17162032344636363026202120223348485254504750314847415957451Danciger C618
Mustang Bayou C619 1 N1891030324434342527232015173044494349544551294445384771421Mustang Bayou C619
Texas City 34th St. C620 1 N20192130313236363229242319203246554651624649334748354574491Texas City 34th St. C620
UH Moody Tower C6951 N18151430253535321923171811182930466154583344304642384872451UH Moody Tower C695
U of H-Sugarland C6961 N15151327213830302620161614172733445049514246284137364955401U of H-Sugarland C696
UH Coastal Center C6971 N16181824253130312324201716152934392831503641263535314156341UH Coastal Center C697
UH WG Jones Forest C6981 N27211730323936332430222018283344465059613932324142415662411UH WG Jones Forest C698
UH West Liberty C6991 N17171331333036372632212219223646514558684636334444425472481UH West Liberty C699
Lynchburg Ferry C1015/A165 11710627252526302123171615162929343835413339304037324352371Lynchburg Ferry C1015/A165
Lake Jackson C1016 11991033334533332725211817173344464954484954324648425955441Lake Jackson C1016
Baytown Garth C101711712928302634342728212321213749534953664641344647396471471Baytown Garth C1017
Galveston 99th St. C1034/A320/X183116252529284534372531NANANANANA46565145564853344448425055451Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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San Antonio
San Antonio Northwest C2321293536273636352524241817163238444962483536354141384855442San Antonio Northwest C23
Camp Bullis C581NA103633303937362624212018153239454753503334354643444752421Camp Bullis C58
Calaveras Lake C5911193135294233322223211716133138494961613031314237434752411Calaveras Lake C59
Heritage Middle School C6221 N1293133304232312222221715123039494661583334324140434548431Heritage Middle School C622
CPS Pecan Valley C6781 N842628253631312121201314102939484864543130303939404654451CPS Pecan Valley C678
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C421661738323934292818211919132943394744504134304243445039372Corpus Christi West C4
Corpus Christi Tuloso C2111771938363635322819242017163041534953493731314446444943401Corpus Christi Tuloso C21
Victoria C87119112132334133322421221922203344455059534042304542405152401Victoria C87
Aransas Pass C6591 NNANANANANANANANANANANANANANANANANANANANANANANANANA435540401Aransas Pass C659
Holly Road C6601 N1411135293534293018191616122640374846463932274039404737371Holly Road C660
Violet C6641 N14519383041342925182220151429364848515137333343392525NANA1Violet C664
Odem C6861 N1571936323636302520222017153041454652513831324345454841381Odem C686
Taft C6871 N1892240384340363023262324203547465048424441364732313029NA1Taft C687
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP1431118143225292623191527301192136334335382720243031354331271Mission C43/AP143
Brownsville C80/AGP18019753131363322201326301392035354741403027274231414337351Brownsville C80/AGP180
Harlingen Teege C1023117111440354139302321303618122640435650483632324140455039381Harlingen Teege C1023
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P244198293726322627211621307102836234650643726303937354842351Laredo 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 - 0.059
51 - 100 Not Defined 0.06 - 0.075
101 - 150 0.125 - 0.164 0.076 - 0.095
151 - 200 0.165 - 0.204 0.096 - 0.115
201 - 300 0.205 - 0.404 0.116 - 0.374
301 - 400 0.405 - 0.504 Not Defined
401 - 500 0.505 - 0.604 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.