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Peak Daily One-Hour Ozone Averages for August 2015

The table below lists the peak daily one-hour ozone concentrations measured in August 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 SitePOCAugust 2015POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 27971100724545463943768064939181787653562154495274768890836768732Ft. Worth Northwest C13/AH302
Keller C172756593674747514344706055758075727352512053484962767692927664732Keller C17
Frisco C31/C6801616495776064665563715749616360658065522665564882636293957868671Frisco C31/C680
Midlothian OFW C52/A1371575762604948403637609987836661595652652748464264585970726859521Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571867911681586164566165565180796879101655241655752738681921078365911Denton Airport South C56/A163/X157
Arlington Municipal Airport C6116156695942404035386410274847468585945512646424181536772766261581Arlington Municipal Airport C61
Dallas North No.2 C63/C679174661057456545848559963576775636977565424595248110647284937577671Dallas North No.2 C63/C679
Rockwall Heath C691625979724851434952825349656164706852552357474780596474787180601Rockwall Heath C69
Grapevine Fairway C70/A301/X182177721087149525842566158547479697587555221554847857882961017861831Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711626160753642415148595958575964575644542144414152535367687363591Kaufman C71/A304/X071
Granbury C73/C68117364786244454241385063601028078705952572651454349796973736265591Granbury C73/C681
Eagle Mountain Lake C75 17969101684342463840545653838569737651522855475360719096856359791Eagle Mountain Lake C75
Parker County C761776481624550434040496660938982776757554156484859848482776765671Parker County C76
Cleburne Airport C77/C68216459686047504744415184791017174696256642954515160657074866458611Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 38068100704751504246978564776469757552562755504793647583907074693Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C4021645675634548443943889070797167656451592349474382616573816761571Dallas Executive Airport C402
Greenville C1006/A1981585561694148443641535547585660615650452054444755605366646771561Greenville C1006/A198
Pilot Point C10321636986836364715764485650586058649268493869604759636290959566731Pilot Point C1032
Italy C1044/A3231625969554248363436389084625858585048672645424051535563687155531Italy C1044/A323
Corsicana Airport C10511676172563738413955527065616159627744512647405449525571747569661Corsicana Airport C1051
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C6442736573693535373440546685646572726346341939294656557982886461682Longview C19/A127/C644
Tyler Airport Relocated C821727667664248344642506078636565676048421736423950667065747264541Tyler Airport Relocated C82
Karnack C85/AFHP3031545661675048676164555245505157585346311736293244354762587072601Karnack C85/AFHP303
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X1512647560606067565664944645717475767555635651545863535464646264752El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X1591516759756467615367814039616162706550515748565250444366615355781Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 1577662626170585769944039666574786455575553565456494868645459781Chamizal C41/AH126
Socorro Hueco C49/F312154707869NA59817880734342565859646462555755685652444962845858811Socorro Hueco C49/F312
Skyline Park C721628557716583596067844548646462707554555751595653484766585559801Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N596358574749435646454345545554626355565651554941434551585863553BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C4141576963746983656171743938595751586252475849575146404165654753821Ivanhoe C414
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Waco
Waco Mazanec C10371676478464552363739567687626262686350663454444553596871807952501Waco Mazanec C1037
Temple Georgia C10451686474445158464445546180667068625853563854454653497381878064561Temple Georgia C1045
Killeen Skylark Field C10471605964515352454543415371635962546050523752424242446671807252551Killeen Skylark Field C1047
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2547480302125303463625769604958606030243535212740684359847076462Beaumont-Downtown C2/A112/C2002
West Orange C9/A14126480754922233131765052NANANANANANA252029252334NA354357NANANA332West Orange C9/A141
Port Arthur West C28/A128/A2281739191292023273336837598745653635428213426202651576168766273541Port Arthur West C28/A128/A228
Hamshire C64/C6541728576282127333558555664597854765131243629242854765973706658481Hamshire C64/C654
SETRPC Port Arthur C6281 N707180322123262833698299997457755531263529252564526969736874491SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C165416364763727283433375782103696660745535334434302860596978656863541SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N516174542834324248485949515154465337333534343031604658717170511SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C6431677883292022273138706177675051585128223225212948604862736265491SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 172888636252733365228NA86765758645731263730252856665169827178531Nederland High School C1035
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Austin
Austin Northwest C3/A322266758645444942425276717181788072NANA483854425054656588949373502Austin Northwest C3/A322
Audubon C381617284464548403945767470747774686441534056424859586695939470571Audubon C38
Fayette County C6012 N546353303032292934455856666065695534374143313452496867666557382Fayette County C601
Dripping Springs School C6141 N677778444448393843538170757777675647485557414551637281928669471Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N576467333332333336415268745662615337403249383638565666796758391CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N595973495052454444515563627160576547543760404947456291948562621CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N656972383535333239496967906873655340413651373942576579838060461Gorzycki Middle School C1603
Lockhart C16041 N656559323332313335395459724860565234343147353741474862696553371Lockhart C1604
CAPCOG San Marcos Staples Road C16751 N636569373535343536475468915874606142444253403940575470807962461CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N586473393743353547515866695764595844434148404349526374807964461CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G31626277122343337414363120718712056657369322424932750915565699710384482Houston East C1/G316
Houston Aldine C8/AF108/X150 2566711951505056578510375115125686569984236297432635454556810613691582Houston Aldine C8/AF108/X150
Channelview C15/AH115 3566811334343741429810364761125557666832252289235564445669899899423Channelview C15/AH115
Northwest Harris Co. C26/A110/X154251601103435344532558054648060616586363430472833494155698311968542Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23916676872825272929411139910410461686354282425532233855769821176867391Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4516875107282626312838121969376747377573027406222291046370701116965371Seabrook Friendship Park C45
Houston Bayland Park C53/A146 18778672730273132451128611510063638257262924492131815287811286965371Houston Bayland Park C53/A146
Conroe Relocated C78/A3211515670565947725755525470836059607653443043383647495257787964501Conroe Relocated C78/A321
Manvel Croix Park C8418210159282627292933631021059776736152253228NANANA79NA591031116964371Manvel Croix Park C84
Clinton C403/C304/AH113 365721102725263032471207312112255637156262624852941824770701118077353Clinton C403/C304/AH113
Houston North Wayside C4051496211431303233366092629310850535372292418622454554143517410370621Houston North Wayside C405
Houston Monroe C40616582722521242526269582112925962575023262652242888487183996254291Houston Monroe C406
Lang C4082597113137413343415712477110108696775753632227028417558608010210378402Lang C408
Houston Croquet C4092768962282928283040841051088777698257293128492137765388951186660362Houston Croquet C409
Houston Westhollow C410174757033312838295210682111967770806534372662283363518883977663401Houston Westhollow C410
Houston Texas Avenue C411162659628303030334512578118119595965642929228524429050676844NANANA1Houston Texas Avenue C411
Park Place C416169818830292931323913587131132636579622833286928371025770801207363361Park Place C416
Sheldon C5511 N4865954037384844778656668653565871332818682544374543526910371431Sheldon C551
Baytown Wetlands Center C5521 N485671262524272647736166615256515025172739202856365256696153311Baytown Wetlands Center C552
Crosby Library C5531 N46656845384354516558517457485249NANANANANANANANANANANANANANANA1Crosby Library C553
West Houston C5541 N6068783030284028509674931026869746731312165233361426683988869411West Houston C554
La Porte Sylvan Beach C5561 N6780104332829353036138109100917674696433283961272997707475977571461La Porte Sylvan Beach C556
Mercer Arboretum C5571 N445174464836504667535166724847448737231538233339323847708467401Mercer Arboretum C557
Tom Bass C5581 N617855212021212222638294926061524520282549182277397385975350291Tom Bass C558
Katy Park C5591 N546059212424222235855668836263705725272241202736375569756852361Katy Park C559
Atascocita C5601 N405774474040484261644560824947487831261948303528333745678265431Atascocita C560
Meyer Park C5611 N4149922935274229546050647350515179312517432133443241568110270461Meyer Park C561
Bunker Hill Village C5621 N61656927322632304911273979463606460302921532231634870731026961341Bunker Hill Village C562
Huffman Wolf Road C5631 N39586542404860485458496462505049934231213733392632NANANA7866381Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N6471126391245434468118791091286668787535282711326509456769010411291501HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N556886383235414695817084766268NANA342732822552584263NANANANANA1Wallisville Road C617
Danciger C618 1 N707646NA19222222263860NA56728462592421NANANANANANANA59524941261Danciger C618
Mustang Bayou C619 1 N7073522423242624263471124576476555425242854942066NA6067806558321Mustang Bayou C619
Texas City 34th St. C620 1 N708390302225292836671081156377756561312839482424818562721047367421Texas City 34th St. C620
UH Moody Tower C6951 N75759231313032334314185126131676380683234288226391005679781207966391UH Moody Tower C695
U of H-Sugarland C6961 N807954242322222332548585748567805526273247202251499790865852361U of H-Sugarland C696
UH Coastal Center C6971 N596769191823262425519790476365544621253143202270715558855659331UH Coastal Center C697
UH WG Jones Forest C6981 N505971435639614466545470855857578648382641354148465065809066541UH WG Jones Forest C698
UH West Liberty C6991 N506976545056655570615775676460589348353646374533444955657977461UH West Liberty C699
Lynchburg Ferry C1015/A165 1566910931273332378310285741055755646130292577233958406173907981351Lynchburg Ferry C1015/A165
Lake Jackson C1016 1607346212220212120335051525778525022203645191730455670715253NA1Lake Jackson C1016
Baytown Garth C10171617697443839434991847390816673667137293378265262436670898692401Baytown Garth C1017
Galveston 99th St. C1034/A320/X183167888124212326232943103126587775645932314849292075786373916869471Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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San Antonio
San Antonio Northwest C23281788942383741364167717497878880714555486141405768621008810173612San Antonio Northwest C23
Camp Bullis C58175788649464450434869675488888873694858526541456168631019810573641Camp Bullis C58
Calaveras Lake C591666667323131323132434867885568575940434356373340525371757762421Calaveras Lake C59
Elm Creek Elementary C5011 N767671373432343236415071796580715340454358393438455672717361421Elm Creek Elementary C501
Fair Oaks Ranch C5021 N657178474342474045675962647573636544544862394461505994969869591Fair Oaks Ranch C502
Bulverde Elementary C5031 N677277504749474347685961737075646450525155394359605987988769351Bulverde Elementary C503
New Braunfels Airport C5041 N616164343432343234445160815666555940413950363842515068767961471New Braunfels Airport C504
City of Garden Ridge C5051 N716874333641333440525560916676645641404152343340524877797966461City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N616565353434343534425558765563555840433557393846505365736961431Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N696867343231333225435471915574636041444959383538495371787466441Heritage Middle School C622
CPS Pecan Valley C6781 N696868353534333034484874826873655941433851363138495081737564441CPS Pecan Valley C678
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C42786230212123222325254440372955634330285044272321437062676247302Corpus Christi West C4
Corpus Christi Tuloso C211756327222123212323284844663657625228285142262226436663666356301Corpus Christi Tuloso C21
Victoria C871786740252729252732425055685966506631294249292941486972706664351Victoria C87
Inez C6091 N725829222223212324274047525261444926253943262228465665605454331Inez C609
Coleto C6241 N695937303132293031324350585257515134334238312622NANA53454236231Coleto C624
Aransas Pass C6591 NNANANANANANA232425243539NANANANANANA2323NANANANANANANANANANANA1Aransas Pass C659
Holly Road C6601 N685724171619181920183236292153563525244739211616376458615240271Holly Road C660
Ingleside C6851 N614940242426232426243239402847503926274536252022375953545043281Ingleside C685
Odem C6861 N675327201921202121283533533248564325264141211720336157635951251Odem C686
Taft C6871 NNANANANANANA131818233035442248544323214637201422345854594943231Taft C687
Cuero C16021 N626144313131293234374352585761506233343145322938476268686657311Cuero C1602
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP1431475236252222NANANANA4239454241453631325844282828354654605534361Mission C43/AP143
Brownsville C80/AGP1801423722222119192023211733342137423728314436222116174651595130251Brownsville C80/AGP180
Harlingen Teege C10231424327272622242529322126393539464129304649272818214651546232361Harlingen Teege C1023
AreaMonitoring SitePOCAugust 2015POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P2441624844322927313032282933424540494044475355363123264255545343351Laredo 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.