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Daily Maximum Eight-Hour Ozone Averages for August 2015

The table below lists the peak daily maximum eight-hour ozone concentrations measured in August 2015 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 SitePOCAugust 2015POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 27063836441414337386064598578737170495113504543636579352Ft. Worth Northwest C13/AH302
Keller C172686081NV4243453938605651NV726666694947164945435767NV362Keller C17
Frisco C31/C68015861827454586046546253475859576275584620545145745958421Frisco C31/C680
Midlothian OFW C52/A13715452595440413532344981747161585653465317434238585357461Midlothian OFW C52/A137
Denton Airport South C56/A163/X15717772887551515648475652497163637289604629595348697375311Denton Airport South C56/A163/X157
Arlington Municipal Airport C6115653645435363429335772617562625455414515413733644757261Arlington Municipal Airport C61
Dallas North No.2 C63/C67916660836950504941487858536165606670534914514744795966411Dallas North No.2 C63/C679
Rockwall Heath C6915956716743464138467751485658596458474815464343604957441Rockwall Heath C69
Grapevine Fairway C70/A301/X18216967945847485140465653506969637181514717484444796575391Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X07116054576634363739434841525454595654424312383636474649311Kaufman C71/A304/X071
Granbury C73/C68116962735743413533354257588665696658495222484139455965311Granbury C73/C681
Eagle Mountain Lake C75 17561786040NV413435455250737163687149452051424357NV81421Eagle Mountain Lake C75
Parker County C761726173554344393538446056777676726455503653464452NV76481Parker County C76
Cleburne Airport C77/C68216156655641423736374569738865686560515622494743545666411Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 37261816444454338428259587060636669495014474542795663353Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C40215853665840423631366868636662615858455114454139655457461Dallas Executive Airport C402
Greenville C1006/A19815552576237443931384648455354555653473916444239514947271Greenville C1006/A198
Pilot Point C103215964717857576252514452465556566179624228595442565959321Pilot Point C1032
Italy C1044/A32315753614837413131333673NV5755555549434819413635454852361Italy C1044/A323
Corsicana Airport C105116155625332343432414758585856575863414220383539444752391Corsicana Airport C1051
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C64426361686431333229385258615556656653422914262536514863252Longview C19/A127/C644
Tyler Airport Relocated C8216465625734443234384549625758606155433612283234455561341Tyler Airport Relocated C82
Karnack C85/AFHP30315053586440435155514748434749555147412714262628392944231Karnack C85/AFHP303
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X15126066565756585254617444426662656969515549454955544549312El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15914862545856614948616438365452545857474848444850443841251Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 15270575755595155637037336053596459534851495151494044261Chamizal C41/AH126
Socorro Hueco C49/F3121516268NVNANV6765756742405354535758565053515854464146291Socorro Hueco C49/F312
Skyline Park C7215570555956645556646943435955576269525052485154494345321Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N6060555444434047424141445352525660525553525246393943363BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C41415162576161675757676337355249485455494450465049413538251Ivanhoe C414
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Waco
Waco Mazanec C103716058674040463134354765716059596157465227443841435062341Waco Mazanec C1037
Temple Georgia C104516262693942493738374455696360656057494829474042473867301Temple Georgia C1045
Killeen Skylark Field C104715655614141413536333549646056595353454630453836393258271Killeen Skylark Field C1047
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 24764692619222527424849635348464951212129271723354041272Beaumont-Downtown C2/A112/C2002
West Orange C9/A14125266663620NV25275043NVNANANANANANANV1622211929NANV41282West Orange C9/A141
Port Arthur West C28/A128/A228161768225182124283160567265NV49464622NV28231922454051311Port Arthur West C28/A128/A228
Hamshire C64/C65416275712420242728414748605361456248272133262024424853291Hamshire C64/C654
SETRPC Port Arthur C6281 N5564742720212425295861807660525949272331252323564057341SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C165415360NV3224243131335164916062575652323040322826554757331SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N485164422529NV31NV3546464848454151292530262526284043281SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C64315570722519202326335549645747464847242028231922393843291SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 1607777302224283042NVNANV6253505252262332262025474349331Nederland High School C1035
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Austin
Austin Northwest C3/A322262707341384238364059616673667265NANANV31493745485763482Austin Northwest C3/A322
Audubon C3815966714140423735375161626761666159NV4735503942484861431Audubon C38
Fayette County C6012 N5159512627282627293553546257616052313235402630404461302Fayette County C601
Dripping Springs School C6141 N6467724038413635374064587161676152444542523741415362481Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N5461623028272929303648586951605750333526443333355053321CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N5456654142434036384149596056555557434630483742443955431CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N6064673433313130334059577258665751383929433336375157431Gorzycki Middle School C1603
Lockhart C16041 N6163572828292829303550516746575047303123392831344444331Lockhart C1604
CAPCOG San Marcos Staples Road C16751 N5962623431323331313949597654665654384035463537375149331CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N5660643634383232374451606553625753414137433640454156331CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G3162536610129273133344680NVNV8853556662271919472134683354262Houston East C1/G316
Houston Aldine C8/AF108/X150 252NV8934384247455874631029564626386352321462642443752302Houston Aldine C8/AF108/X150
Channelview C15/AH115 34959862822313132516752658152495759261817461936462950303Channelview C15/AH115
Northwest Harris Co. C26/A110/X15424955823131303430375646566657565665292926412427373550322Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23915471762220232425317367887757545851242120341924633362281Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C451626887232023232227717385NV69546352262431402022673964291Seabrook Friendship Park C45
Houston Bayland Park C53/A146 16469622526242425346771988061566654222421351723643470301Houston Bayland Park C53/A146
Conroe Relocated C78/A32114955674542395341434646657057565668423326353232403949321Conroe Relocated C78/A321
Manvel Croix Park C8417187552424252526274771896268595550222423NANANANVNANV381Manvel Croix Park C84
Clinton C403/C304/AH113 357659122212224283782609283NV556549221815442028653057213Clinton C403/C304/AH113
Houston North Wayside C40514452902324262830426346787846494759241410321734442540221Houston North Wayside C405
Houston Monroe C406155736119202121232359648962555154442120213517216729NV221Houston Monroe C406
Lang C40825566953033303434437460919464626467302117492432613356292Lang C408
Houston Croquet C40926276572526252427295774926669NV6654252524371928643676292Houston Croquet C409
Houston Westhollow C41016472612928263027376465847973656860282923432330523873311Houston Westhollow C410
Houston Texas Avenue C411151597622242526283779589486565561572520174519316731NVNA1Houston Texas Avenue C411
Park Place C4161587471242525262732857010087595666572523224421277733NV281Park Place C416
Sheldon C5511 N4556792926333434486147626950485162241514381934322741281Sheldon C551
Baytown Wetlands Center C5521 N4351602119202221335447575149444845201523291524412946271Baytown Wetlands Center C552
Crosby Library C5531 N445363312631363542494357504644NVNANANANANANANANANANANA1Crosby Library C553
West Houston C5541 N5564642526252926345557727964626560272418422029463157301West Houston C554
La Porte Sylvan Beach C5561 N6171852623262625318682896873596458282432402023673965331La Porte Sylvan Beach C556
Mercer Arboretum C5571 N4247673033314135444341506145454268291412241924282234181Mercer Arboretum C557
Tom Bass C5581 N5269471918181920204460815556504943192021311517572661231Tom Bass C558
Katy Park C5591 N4856481921212020264349576257565849202317311723NV3048231Katy Park C559
Atascocita C5601 N3745632928323734414640546544454464261816302329252736201Atascocita C560
Meyer Park C5611 N3946752627243326344938516348484663252014311724342639241Meyer Park C561
Bunker Hill Village C5621 N5260612526242626346357807560565853242117361724513057291Bunker Hill Village C562
Huffman Wolf Road C5631 N374655302834393439413751544745466929201727243122NVNANA1Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N54659928NVNV34365082659695615871682820NVNV2035703464251HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N475975272324NVNANANANV6162534855572721NVNANANANANANANA1Wallisville Road C617
Danciger C618 1 N606641NANV202021232946NANV627152552218NANANANANANANANA1Danciger C618
Mustang Bayou C619 1 N59694820202222222229568446615851482221265992NV49NANV331Mustang Bayou C619
Texas City 34th St. C620 1 N6373772421232525274885935072635953232333382220575258361Texas City 34th St. C620
UH Moody Tower C6951 N606976272827273035876910693625768602725NV492229793764381UH Moody Tower C695
U of H-Sugarland C6961 N6371482220212121274066736274596051222427361820403679341U of H-Sugarland C696
UH Coastal Center C6971 N5159531716192020203468794057544843192027331817514152331UH Coastal Center C697
UH WG Jones Forest C6981 N4855673839354637444845637256555466382823342831443947411UH WG Jones Forest C698
UH West Liberty C6991 N49NVNV4337414943494847656056535464352629343040NV3846321UH West Liberty C699
Lynchburg Ferry C1015/A165 14464812419262526496558677951475854252119472030473150271Lynchburg Ferry C1015/A165
Lake Jackson C1016 15867391919191919182543464451614646NV1732361616263251341Lake Jackson C1016
Baytown Garth C101715366843227303435586856707161556264292227442140463657341Baytown Garth C1017
Galveston 99th St. C1034/A320/X183162787121192124222436751015170655853282640382318485660441Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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San Antonio
San Antonio Northwest C232757376NV34353833365160537968786764434941523635455657552San Antonio Northwest C23
Camp Bullis C5817074804440394337415660467571736465455142533739505757431Camp Bullis C58
Calaveras Lake C5916361603028292929293541587551605454373935453130334449321Calaveras Lake C59
Elm Creek Elementary C5011 N7065663330293130313443576753636250394038493331323944391Elm Creek Elementary C501
Fair Oaks Ranch C5021 N6166704236364136384850525957615661414741513536494455431Fair Oaks Ranch C502
Bulverde Elementary C5031 N64677045414138384050515265NVNANANANANANANANANANANANANA1Bulverde Elementary C503
New Braunfels Airport C5041 N5759613229303029293845557348625153353833423133354446371New Braunfels Airport C504
City of Garden Ridge C5051 N6464673131332829314250557457675652373733412930364944371City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N5762623230303130303446567047565354363831443335374249341Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N6463633129292929183544657751675655363938453031344650401Heritage Middle School C622
CPS Pecan Valley C6781 N6261623230302928293642657253665553383933423028344646401CPS Pecan Valley C678
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C427258212019212022232330363225515435252541362221193365422Corpus Christi West C4
Corpus Christi Tuloso C2116958222120201921222536344231525335262339332220212960341Corpus Christi Tuloso C21
Victoria C8717064312424252225272839445647614358272636382424344264351Victoria C87
Inez C6091 N6355252120212021222333394343583843252234372220263554261Inez C609
Coleto C6241 N605530282828262829283738NVNV543845313035352624120001Coleto C624
Aransas Pass C6591 NNANANANANANANV23232228NVNANANANANANANVNANANANANANANANA1Aransas Pass C659
Holly Road C6601 N6453141615171518191623302320465026202036301615133159371Holly Road C660
Ingleside C6851 N5647202222242123242224302924444431222134292119193254391Ingleside C685
Odem C6861 N5950181717191819202126273326444634232132261715162452341Odem C686
Taft C6871 NNANANANANANANV16171722262820444531181831251413152350361Taft C687
Cuero C16021 N5958372726272426272940505450594857302929392626334454341Cuero C1602
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP14314245302320NVNANANANANV313935354133294843362525172842271Mission C43/AP143
Brownsville C80/AGP18013329162019171719211915232318283830282726271819151543311Brownsville C80/AGP180
Harlingen Teege C102313737242322212223262719243025334233263129342524161844251Harlingen Teege C1023
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P24415846412926262728292525303943374638414448453427212438351Laredo 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 - 0.059
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.