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Peak Daily One-Hour Ozone Averages for July 2015

The table below lists the peak daily one-hour ozone concentrations measured in July 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 SitePOCJuly 2015POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 23734303128352827353735363847NA484236323942384144434947435897982Ft. Worth Northwest C13/AH302
Keller C172363228322734272632353436374847454236354546414347434741385576842Keller C17
Frisco C31/C6801504233443134313139434844607462585244465864585865626155466671641Frisco C31/C680
Midlothian OFW C52/A1371393829302528273532353538444544514637324241NANANANANA37333870591Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571433733403241312942494652547264615953496062606568637060518273741Denton Airport South C56/A163/X157
Arlington Municipal Airport C611313223232123212626293129323843453930293536343945383935333899711Arlington Municipal Airport C61
Dallas North No.2 C63/C6791444138382830283233343839566350565040384653485253535647416684641Dallas North No.2 C63/C679
Rockwall Heath C691424034362632283637363534494939423834303747384745524860494456651Rockwall Heath C69
Grapevine Fairway C70/A301/X1821423834362732302935383938525747514838364949444753515647436582761Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711343029302530282740373629354141423631383446303534574857493554681Kaufman C71/A304/X071
Granbury C73/C6811403829303037263139413633414847534940344349414747444939464665851Granbury C73/C681
Eagle Mountain Lake C75 1343328312635242535383636354247464436313742373943464851496063871Eagle Mountain Lake C75
Parker County C761383729332936252935413334404343434037293541404843414541425655911Parker County C76
Cleburne Airport C77/C6821333627312734273435383538445048494236324246394549424737454072701Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3383831312627273030283535435240504336313845434547455145365198683Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C4021353624282324253228252831373837443931273538394342394638304090651Dallas Executive Airport C402
Greenville C1006/A1981393626322432293341393630424837423635393536323943423944453251541Greenville C1006/A198
Pilot Point C10321494034403338333043495049557267615854516165636771646464536654561Pilot Point C1032
Italy C1044/A3231393535302427263531312932414135403730253336364641354335313556551Italy C1044/A323
Corsicana Airport C10511323033262830282835373733384642413835363539323735635655445356591Corsicana Airport C1051
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C6442323225372430333728353233374340322830284743293335495743328558602Longview C19/A127/C644
Tyler Airport Relocated C821432926382341333434272737414136383333324844324350524341285461641Tyler Airport Relocated C82
Karnack C85/AFHP3031403821303324243633364254435651453745505855424349434454464158491Karnack C85/AFHP303
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X1512837157546053758675576558616555515247474573464853636148NA6771482El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15917358514254487267604033NA745347484850434469555661616357525765411Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 1806955476054767771435350686355545449505074545055596458525872441Chamizal C41/AH126
Socorro Hueco C49/F3121696853456557686153484552637358596556555671536564736855656669471Socorro Hueco C49/F312
Skyline Park C721845254445853747967515349666151504847475065525056586553546263551Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N353934323848494845414138474243454440384640424647605043403738553BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C4141734751425954676660474750686756454748434562616558536252625870491Ivanhoe C414
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Waco
Waco Mazanec C10371413236312527263131313134444138403631323243384540404432343745601Waco Mazanec C1037
Temple Georgia C10451443639302628263230323141494538463735344344404944443533354049671Temple Georgia C1045
Killeen Skylark Field C10471353536312732293330363842545246544436364847444549403433445145591Killeen Skylark Field C1047
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 218211919202018242327262631243126222525NA10242430383435284640452Beaumont-Downtown C2/A112/C2002
West Orange C9/A1412192330252223192524282443372844322630522826243240514747295539452West Orange C9/A141
Port Arthur West C28/A128/A2281212221222423192626313126292630302524243523252827323634238262551Port Arthur West C28/A128/A228
Hamshire C64/C6541182121242323192923262530352733292627293126242830353431266650561Hamshire C64/C654
SETRPC Port Arthur C6281 N222323242323212527323326292729312624263224262827323537228371581SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C16541202120222221192427293025252727292525253021272626242928245360591SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N243228242325213328313039433345413236424633263249424844524639461SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C6431171817181718162121252422242225242121212920212322273129236750461SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 1212524242725232927343429342933322728273826262929363938266457531Nederland High School C1035
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Austin
Austin Northwest C3/A3222343032262528253130313639473942453831334038404140433838363867642Austin Northwest C3/A322
Audubon C381323133272728263131313539463941473631343739363943444037394165631Audubon C38
Fayette County C6012 N262524202023232526282629242835332930262626272629342727272843632Fayette County C601
Dripping Springs School C6141 N383433292732273231333438453741473731333435363839433633424159631Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N272627262125222426302527282834343227273028313334393029303255611CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N383437312730293434373843514749544434364745434546504242424848591CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N332930252326263029293335413539403629303133323737383332323361591Gorzycki Middle School C1603
Lockhart C16041 N322729232226232830333231343340383529303032323434343331303550641Lockhart C1604
CAPCOG San Marcos Staples Road C16751 N372828232326243044242725293134353226272729303235313127313050721CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N322830252326242728302830333137393428283133343636433831323552611CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G3162222729272324222824363133373744433232423736303350494337397570442Houston East C1/G316
Houston Aldine C8/AF108/X150 2273238282528253534514342505259584037605253414367595949567772562Houston Aldine C8/AF108/X150
Channelview C15/AH115 3202234252222192621373137433643382931403934273145435245437854463Channelview C15/AH115
Northwest Harris Co. C26/A110/X1542302626232329253032443528353551473031403755293039474048425052522Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23911920232121201823212729242830363325283428272428353934322911471521Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C451232224222121222724332938303432282426333323162527343331298379631Seabrook Friendship Park C45
Houston Bayland Park C53/A146 1222118161521182422282224283134322324253128263137313228337878721Houston Bayland Park C53/A146
Conroe Relocated C78/A3211404850323142374154795747477178715055536440464375585278855346581Conroe Relocated C78/A321
Manvel Croix Park C841263226242324243024282828272933322626272524262531322730314286951Manvel Croix Park C84
Clinton C403/C304/AH113 3182225242225202221242527262935312427322735222437363028298375523Clinton C403/C304/AH113
Houston North Wayside C4051152023191821182423312728323440372728403331242442423733356260431Houston North Wayside C405
Houston Monroe C4061202020211920192219222122252630272423252120232428292225276672661Houston Monroe C406
Lang C4082232932232126253029393437394853463432425239363950474541437475662Lang C408
Houston Croquet C4092242823212026232926282526282932332524262927272831312633375890722Houston Croquet C409
Houston Westhollow C4101232828232227232927342926283245393030373328272742444334356674721Houston Westhollow C410
Houston Texas Avenue C4111182324212020172520292628293134332624282927232332333029277465481Houston Texas Avenue C411
Park Place C41612423242322232127242925263029333324273127252426333428323110687591Park Place C416
Sheldon C5511 NNA3750403938364239575255595466423235474031303553495453515550441Sheldon C551
Baytown Wetlands Center C5521 N212126222024212624302632332627252425292524212929313135308151451Baytown Wetlands Center C552
Crosby Library C5531 N192742262525232927373149535053493241574634343861516658566343431Crosby Library C553
West Houston C5541 N192420181823202525322724252743402626332925242538443537356971581West Houston C554
La Porte Sylvan Beach C5561 N2624272521252330263833363034322928283133262534353535353611393671La Porte Sylvan Beach C556
Mercer Arboretum C5571 N233236242226232934544036435157524037525246344261565350575042461Mercer Arboretum C557
Tom Bass C5581 N202118181616152118232120212426242021211918201923251923204978651Tom Bass C558
Katy Park C5591 N192117171620172320342521242429262120222321212126372627183545481Katy Park C559
Atascocita C5601 N263132232326233033424033394051383338534435333348445443502837381Atascocita C560
Meyer Park C5611 N172730192025232729413624294352453133424247272751514143465531371Meyer Park C561
Bunker Hill Village C5621 N172224211824212525292429293542362729333727272841343529266961611Bunker Hill Village C562
Huffman Wolf Road C5631 N264042202617243129362850504857533441475237284063494871642730381Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N202729262322202723302834353342392730413431273144414235397364471HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N232535252227212727312834433945373234473534273546485756458547441Wallisville Road C617
Danciger C618 1 N232018211719NANANANANA1711999NA83101NA18NANANA132125NANANA2160811Danciger C618
Mustang Bayou C619 1 N212324232223212622232422263032312525292725252926232126202769151Mustang Bayou C619
Texas City 34th St. C620 1 N252631302427253225282927252631292626262723252729263028266270911Texas City 34th St. C620
UH Moody Tower C6951 N24272724232522302633292922323725NANANA1328272735363132309475591UH Moody Tower C695
U of H-Sugarland C6961 N222021191720172324322921212430282324252321222229302522204473741U of H-Sugarland C696
UH Coastal Center C6971 N192021191719192219202124252423211919272319192221192020203360721UH Coastal Center C697
UH WG Jones Forest C6981 N324042272834323849724940436173664548585843433769625669755549541UH WG Jones Forest C698
UH West Liberty C6991 N313760333133293638473564705868565049666647445771606671694844501UH West Liberty C699
Lynchburg Ferry C1015/A165 1222427232224212622312930343336332429373323273235374549357260441Lynchburg Ferry C1015/A165
Lake Jackson C1016 124232321NA20202619192318172824242021201819222321211818192147751Lake Jackson C1016
Baytown Garth C10171272838262529243130363138444350423738514138324056536361509753511Baytown Garth C1017
Galveston 99th St. C1034/A320/X18313026313023262329252627232224292724252123212525262519242726551001Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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San Antonio
San Antonio Northwest C232NA3230272526243230323433363942403828323334353640445240383869612San Antonio Northwest C23
Camp Bullis C581393033292528263332353636455246494031374241434045515046424674521Camp Bullis C58
Calaveras Lake C591302928222126222829302826273239353126272829293330333531323354621Calaveras Lake C59
Elm Creek Elementary C5011 N312727252225233025282828363236363325293029303232333329343246791Elm Creek Elementary C501
Fair Oaks Ranch C5021 N362933282428243130343733414746483931364039423843474545424365441Fair Oaks Ranch C502
New Braunfels Airport C5041 N332829232227242927282926302938393429293130323535333331353152691New Braunfels Airport C504
City of Garden Ridge C5051 N293028222026202730282729363239343027292628313431363031313156581City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N312729252225242827272726312836383428283131313435333229323146681Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N322930242126222930322926273342373128282730303432363632323449621Heritage Middle School C622
CPS Pecan Valley C6781 N282725211822202727282626303137343135262928303134323329313047621CPS Pecan Valley C678
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C42372825323025242523242223202228282622242324242522212123232625552Corpus Christi West C4
Corpus Christi Tuloso C211363023312623212322222022192126262420232121212522212222232529471Corpus Christi Tuloso C21
Victoria C871312424232424202625252524262532302627262425252725322923243455601Victoria C87
Inez C6091 N222216NANANANANANANANANANA1824242321201921222321222120222240541Inez C609
Coleto C6241 N312726252527262927262628282731322927282828283129292826262946561Coleto C624
Aransas Pass C6591 NNANANANANANANANANANANANANANANA2120NANANANANANANANANANANANANANA1Aransas Pass C659
Holly Road C6601 N302021272518181918171415141521201916191718192318161718202220421Holly Road C660
Ingleside C6851 N312527292825242423252224222124242322242122242722212323272726481Ingleside C685
Odem C6861 N282519242519182018211618171824232016191919202320191918212532401Odem C686
Taft C6871 N1912NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA1Taft C687
Cuero C16021 N242226222222212524262431333130332926272729292930312821233051571Cuero C1602
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP1431273024372221202442342523212228282520212224242523262323212436321Mission C43/AP143
Brownsville C80/AGP1801292822322121212139261819161823252618202122212320161818202120311Brownsville C80/AGP180
Harlingen Teege C10231283123352122212332312526242230322718212427232623212324252830261Harlingen Teege C1023
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P2441322529291924202526333023243438373224242627293232332731313025381Laredo 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.