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Peak Daily One-Hour Ozone Averages for August 2014

The table below lists the peak daily one-hour ozone concentrations measured in August 2014 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 SitePOCAugust 2014POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 2435054767254494845545255709060463935503939394141718574532Ft. Worth Northwest C13/AH302
Keller C172384451657455544744516050599464454033523742424143868074572Keller C17
Frisco C31/C6801354458647869686159565847508775515259634445515053736161641Frisco C31/C680
Midlothian OFW C52/A1371384953574647515037367054745952412828503840443335505061521Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571384555649464685454495950509376564949614348494758866968691Denton Airport South C56/A163/X157
Arlington Municipal Airport C611365053665951484436446452736851413326463536403336516857481Arlington Municipal Airport C61
Dallas North No.2 C63/C6791344456596258595147495747567763553739544240433842775855541Dallas North No.2 C63/C679
Rockwall Heath C691344756595353455047545950516558583041504538464740646059531Rockwall Heath C69
Grapevine Fairway C70/A301/X1821384458658660585147555949549466514141544143434148888071601Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711334856624854464549385846505058412733464341475248435768491Kaufman C71/A304/X071
Granbury C73/C6811465861745450454736446856866751423940454037363837537658561Granbury C73/C681
Eagle Mountain Lake C75 1354450637550444140435847529259423434403433353439726566551Eagle Mountain Lake C75
Parker County C761424956716857444339426157698658443731403335343339607584561Parker County C76
Cleburne Airport C77/C6821516361665752555038397563876853423131473740484141526758541Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3364758636354534843526451597755493232493939403639766358553Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C4021364653614948475040456654716750412931494339423337585856511Dallas Executive Airport C402
Greenville C1006/A1981324555594149454543485545445758553242483938413941526169501Greenville C1006/A198
Pilot Point C10321404656668574756260485850529385565365644749575457685462751Pilot Point C1032
Italy C1044/A3231384653484846495342387961555446453036493932383535524858561Italy C1044/A323
Corsicana Airport C10511354855485055434436465652495154442941434738464958595056451Corsicana Airport C1051
AreaMonitoring SitePOCAugust 2014POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C6442354041528741313831326052575652342929363034373340835858542Longview C19/A127/C644
Tyler Airport Relocated C821385142513936373641375446477256362841453442433939506567511Tyler Airport Relocated C82
Karnack C85/AFHP3031333636394458565260385042465356462846513730535055464055561Karnack C85/AFHP303
AreaMonitoring SitePOCAugust 2014POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X1512495859587375617055524745624954608079524644564155524666492El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15914752504879626368NANA40374754495575644841484755NA474865551Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 14752535180716865535038NANANA53577977534744484248444763531Chamizal C41/AH126
Socorro Hueco C49/F3121515554567061638752484339475061686361545248525149526872821Socorro Hueco C49/F312
Skyline Park C721535656588179726652464542515457608160554646645157585257521Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N495255576155504643474038555851474748474555474442444853513BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C4141424944457663626546373634375249516252494247515846415751561Ivanhoe C414
Cd Juarez Delphi C6631 N334645416250496653363628324539476154403537394537424659561Cd Juarez Delphi C663
AreaMonitoring SitePOCAugust 2014POCMonitoring Site
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Waco
Waco Mazanec C10371454753525550475342405765565347452851493431403638585356531Waco Mazanec C1037
Temple Georgia C104515052565360545156493935NA706960503448433736463940546067541Temple Georgia C1045
Killeen Skylark Field C10471495155545754605649403764636562553642474339504845566065521Killeen Skylark Field C1047
AreaMonitoring SitePOCAugust 2014POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2403440575333292427304150706766342324232722293654474851392Beaumont-Downtown C2/A112/C2002
West Orange C9/A1412323037584236322931405045676268342328262520453459384740372West Orange C9/A141
Port Arthur West C28/A128/A2281394153504132242223244454776252392325252420243364485545361Port Arthur West C28/A128/A228
Hamshire C64/C6541403247473831292626285655796852362625232623192531375249351Hamshire C64/C654
SETRPC Port Arthur C6281 N3335533936292119212233455750422920NANA2318223252NA5342321SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C16541434756423834222325233355475044262527222922272639574938361SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N3431NA25546292432334243374962362526262923494947353347351SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C643141404551423226242628455577NANANANANA252723283669525447391SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 1393741604433262325274551708555362325232721274056485344361Nederland High School C1035
AreaMonitoring SitePOCAugust 2014POCMonitoring Site
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Austin
Austin Northwest C3/A32224749504456514344374244615765524435NANA3328363843556261492Austin Northwest C3/A322
Audubon C38147515347645951484146356567695349394040363140NANA645763531Audubon C38
Fayette County C6012 N53485357554938341131132549640352930293024333337405656472Fayette County C601
Dripping Springs School C6141 N465254525655504841403866647154473839393630353741557066471Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N433944384343363126273856526739352729312924313233374451361CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N464952505464555643443264665963524343453935454647544957481CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N455054494750434137374462576544423232333127333538486462371Gorzycki Middle School C1603
Lockhart C16041 N594646332515155NANA78NA5766717770NA343226343538445162461Lockhart C1604
CAPCOG San Marcos Staples Road C16751 N465150504546383426283960565840352728292824313334414762431CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N282831283029262521232341403937312726262422252526293439351CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCAugust 2014POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G316256363859435231322715NANANANA37322131243024464461714455392Houston East C1/G316
Houston Aldine C8/AF108/X150 2463239414955333632415045456066312336223325525080534339412Houston Aldine C8/AF108/X150
Channelview C15/AH115 3553534453851323230456860556157352232233026444576534346333Channelview C15/AH115
Northwest Harris Co. C26/A110/X1542443439476753363528283651517755322533323427525872625351532Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP2391573639514243242626275261665045252025222623363349795548371Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C451624055513847282522294869615245242332212520313041835944431Seabrook Friendship Park C45
Houston Bayland Park C53/A146 1484448723843262823304368747443272030172820323338886463411Houston Bayland Park C53/A146
Conroe Relocated C78/A3211443739433983636645374256455791412745334544836860444546491Conroe Relocated C78/A321
Manvel Croix Park C84151515675374224242329407910754342620242127212929341057450381Manvel Croix Park C84
Clinton C403/C304/AH113 3463737603735202122295154645239231817132016333554704859323Clinton C403/C304/AH113
Houston North Wayside C4051433640475051213127436857536562332029183021494773575044391Houston North Wayside C405
Houston Monroe C4061493743613541222319274068795336241925202619292641895852361Houston Monroe C406
Lang C4082463843586055333827395363637757292333263128394455715848432Lang C408
Houston Croquet C4092494551754042242624264371846340262128202820313237906967402Houston Croquet C409
Houston Westhollow C4101473644714650272922313858708742262032222722363441776057421Houston Westhollow C410
Houston Texas Avenue C4111483845674343242625325666716946272028192618333148705152361Houston Texas Avenue C411
Park Place C4161513542644046262725295365975543262026212821353550895761411Park Place C416
Sheldon C5511 N412629323246272726324340374848221521162216322642222428171Sheldon C551
Baytown Wetlands Center C5521 N543237433545272726285954614744292128242420362936634744311Baytown Wetlands Center C552
Crosby Library C5531 N473132414366434337425750466572362744293434805253414441371Crosby Library C553
West Houston C5541 N3730345541392424182433425168332119211715112323167NANANA1West Houston C554
La Porte Sylvan Beach C5561 N703943514247303126346069585647312432NANANANANANANANANANA1La Porte Sylvan Beach C556
Mercer Arboretum C5571 N403234405161424735405048476679362536293836696181424042461Mercer Arboretum C557
Tom Bass C5581 N464043592934202017213457774426161217131814211926844944291Tom Bass C558
Katy Park C5591 N443441805144272724254154569538292128222723373747715755431Katy Park C559
Atascocita C5601 N403033404962394537384848386278362640253528585475433837401Atascocita C560
Meyer Park C5611 N403237435863374027334054527371332638313833615679595148541Meyer Park C561
Bunker Hill Village C5621 N433743744052273123324360668351251930232725333644745753391Bunker Hill Village C562
Huffman Wolf Road C5631 NNA2829353665414538494644365668372438282924484343303033261Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N563841614553303126418260666454332332253125434071725160391HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N583639514464373939538461686861372739313332624452534856411Wallisville Road C617
Danciger C618 1 N404361613239212222213564926723261921192620232035458148411Danciger C618
Mustang Bayou C619 1 N454756553536252424253878665436252330202520242230875639361Mustang Bayou C619
Texas City 34th St. C620 1 N574946514038212222284288555438242028192720242438755845401Texas City 34th St. C620
UH Moody Tower C6951 N584855765152323131366181817451242437243224403855916369471UH Moody Tower C695
U of H-Sugarland C6961 N453848813544232419223770826934231923192520262733876976401U of H-Sugarland C696
UH Coastal Center C6971 N504945523735242223274083555337242131182619252435765746371UH Coastal Center C697
UH WG Jones Forest C6981 N453638456276495947363857475994362840304538826973544948541UH WG Jones Forest C698
UH West Liberty C6991 N463436423973535150555355457083443247363746655361414248391UH West Liberty C699
Lynchburg Ferry C1015/A165 1543332473744272826416552574952282027232625373253584249341Lynchburg Ferry C1015/A165
Lake Jackson C1016 1284855543333201921202855636128222020182219201937405835331Lake Jackson C1016
Baytown Garth C10171553436453962353636507555636558342638293031594147484954391Baytown Garth C1017
Galveston 99th St. C1034/A320/X1831565460624335212626284396606045252422233022292541795949411Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCAugust 2014POCMonitoring Site
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San Antonio
San Antonio Northwest C232455249637361484945426659638250453539403328383745578069592San Antonio Northwest C23
Camp Bullis C581455253627167535448456556647559513842NANA33434348656868591Camp Bullis C58
Calaveras Lake C591596359615947383540324055606641392932323227333438445064501Calaveras Lake C59
Elm Creek Elementary C5011 N635655805857403744313651798640412731333126323436356466511Elm Creek Elementary C501
Fair Oaks Ranch C5021 N404645546563525444463949566355483739443630404246595159491Fair Oaks Ranch C502
Bulverde Elementary C5031 N424948565865535244475256606057503441423430413946565867541Bulverde Elementary C503
New Braunfels Airport C5041 N546361635750423930334468606443402933323529353639475263491New Braunfels Airport C504
City of Garden Ridge C5051 N434948555052363634334751576043382427312623272931364156421City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N575653525450423830364069596941403133323429383539505464491Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N586459635947393542314857597243442931313326343739465664521Heritage Middle School C622
CPS Pecan Valley C6781 N565757675853414044374959788151493136383428343739467266541CPS Pecan Valley C678
AreaMonitoring SitePOCAugust 2014POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C42225560625933292822182244653425272437352724252428246058482Corpus Christi West C4
Corpus Christi Tuloso C211235756596128262722192238564526252232302220252326295853441Corpus Christi Tuloso C21
Victoria C871454949595336242822233143535145282327242521262931475866451Victoria C87
Inez C6091 N504949584429212320233440474125242122202419212222335368421Inez C609
Coleto C6241 N173332453621141712131928342819181422202117211920355359351Coleto C624
Aransas Pass C6591 N165152704936282618151948522623272434312718191922236147431Aransas Pass C659
Holly Road C6601 N165156614930272218131537552519221932302119182121225652431Holly Road C660
Violet C6641 N205959617225252622161745583824231927232116201923235354421Violet C664
Ingleside C6851 N195053625334282920181844442724272434302520212222235549401Ingleside C685
Odem C6861 N26595727NANANANANANANANANANANANANANANANANANANANA2241NANA1Odem C686
Taft C6871 N266062746437323022213441544425302437352923242527275554441Taft C687
Cuero C16021 N575157615342353231313559585142362829252723333233444867401Cuero C1602
AreaMonitoring SitePOCAugust 2014POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP1431303651535328272632272734393628242036272220223023324049421Mission C43/AP143
Brownsville C80/AGP1801202750533822272330201937302525242240312321222919224444531Brownsville C80/AGP180
Harlingen Teege C10231283553534927332943283234303429242345352422273629354546571Harlingen Teege C1023
AreaMonitoring SitePOCAugust 2014POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P2441253154655142353453272432504637342529303220253226323552471Laredo 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.