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Peak Daily One-Hour Ozone Averages for October 2014

The table below lists the peak daily one-hour ozone concentrations measured in October 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 SitePOCOctober 2014POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 24344495052514841413320314344676087674870706159616159514552512Ft. Worth Northwest C13/AH302
Keller C1724241454952505039403320313837655377534866695456615856484146502Keller C17
Frisco C31/C68014840495359576244424321334540565974505270645655708068564444481Frisco C31/C680
Midlothian OFW C52/A1371353549445049523635351828NANA535555584559595250585359504340501Midlothian OFW C52/A137
Denton Airport South C56/A163/X15715146465660606448434019373841565972475569806864726763514246581Denton Airport South C56/A163/X157
Arlington Municipal Airport C6113438464451444639333317294240705176654460635450576058494143491Arlington Municipal Airport C61
Rockwall Heath C6914639525054555245434219354540626777544969635956638067463745531Rockwall Heath C69
Grapevine Fairway C70/A301/X18214638495057515443383919313841624985555772715648697261514447601Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X07114638524652524746423721294341556258544852595750616165463544511Kaufman C71/A304/X071
Granbury C73/C68114850505049515247383219284543535173694957595453555258504450431Granbury C73/C681
Eagle Mountain Lake C75 14142434950494840393118303539544676504563655957565454494247501Eagle Mountain Lake C75
Parker County C7614553515450486043372914264447605181574356654849505156434455421Parker County C76
Cleburne Airport C77/C68214046535054535241423616294543595978724963625760645866575349491Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3NANA515056505241363520323740575590615465645154646765524144513Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C40213032484449465440313414274134595159513954524246535055453739421Dallas Executive Airport C402
Greenville C1006/A19814433545052545041384017302740476463454657565153607267473640481Greenville C1006/A198
Pilot Point C103215746495464657354454622374641536870474869685761757770584745551Pilot Point C1032
Italy C1044/A32313436524849505238344118254242666059534652605051635963424342461Italy C1044/A323
Corsicana Airport C105114040515152544844403316164342656354544152595156586268474043511Corsicana Airport C1051
AreaMonitoring SitePOCOctober 2014POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C64422937435754543435443029224241486248434570595950906158593739542Longview C19/A127/C644
Tyler Airport Relocated C8212935454951514634383228224441546857485455646164596471494042481Tyler Airport Relocated C82
Karnack C85/AFHP30313231394662604240453427264341NA6858393843444739467266493837501Karnack C85/AFHP303
AreaMonitoring SitePOCOctober 2014POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X15124955567550424751314161525150624244565338444956497241325251452El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15914253537746384554303649454445603842564635414466597146284949421Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 15156538249444853334154524946604442534637444662506942334453431Chamizal C41/AH126
Socorro Hueco C49/F31214656536949534972324549505149585663614938414574756646324844441Socorro Hueco C49/F312
Skyline Park C7215352536349454959384157524753664843584538455158575641364849431Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N3753544949504748484038474747454644514737384035393939394746413BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C41414445456941424453314044474240433940534228334154555043304442371Ivanhoe C414
Cd Juarez Delphi C6631 N32NANANANANANANANANANANANANANANANANANANANANANANANANANANANANA1Cd Juarez Delphi C663
AreaMonitoring SitePOCOctober 2014POCMonitoring Site
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Waco
Waco Mazanec C103713939585153575439354019224640506759545060615061656765465244441Waco Mazanec C1037
Temple Georgia C104514347614856565939354322244842537764514865615364716470514648511Temple Georgia C1045
Killeen Skylark Field C104715941565363577048464121284745546974535165645764806476534649521Killeen Skylark Field C1047
AreaMonitoring SitePOCOctober 2014POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 22617443454434044332329294040516947575557575547447661604742462Beaumont-Downtown C2/A112/C2002
West Orange C9/A1412262046365544483831253127363748NA38514955575547427375554934422West Orange C9/A141
Port Arthur West C28/A128/A22812715473652453838332229243837555844656473656854467655604141561Port Arthur West C28/A128/A228
Hamshire C64/C65412517374253433833352126253739636047727076596956507556594336631Hamshire C64/C654
SETRPC Port Arthur C6281 N2017373143383230261825212932494738604763595550426952523739461SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C1654127NA483648412835312232263839675445514869565357585855573947471SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N2019483256425145332630303939507949484451554742405171625234401SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C643132NANANA41454139332429294043536548646968606955488055603824291SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 12815453353NA3740332329263940516747606063586553457854594342521Nederland High School C1035
AreaMonitoring SitePOCOctober 2014POCMonitoring Site
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Austin
Austin Northwest C3/A32224440565453495238343122213943556657464958545375776767464646622Austin Northwest C3/A322
Audubon C3815243545857515542393423203942537168534962585766736268484748591Audubon C38
Fayette County C6012 N4137525253533833352933323942566148494958615454617356444239482Fayette County C601
Dripping Springs School C6141 N5339495355475538363319253740516964515164605467666468484450511Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N3725444241413930282420203133465541343844454145545548373731451CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N5343555458515943403721244342527169484758545371796871504449641CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N1NA54676074NANANANANANANANA445245404149444462565953373940491Gorzycki Middle School C1603
Lockhart C16041 N4428505150484537363122403843676255445358565462697161464446501Lockhart C1604
CAPCOG San Marcos Staples Road C16751 N4232495050433833322918323538656147404753515065677057424343481CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N1818282424242218161612132423313831293035363337484844323230381CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCOctober 2014POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G31623520384049424237432429352737595948566958596042437859494742542Houston East C1/G316
Houston Aldine C8/AF108/X150 240353742519394145213035343854604849474145253507059464639472Houston Aldine C8/AF108/X150
Channelview C15/AH115 32818393449383832342228363043625648506054545345436857464445463Channelview C15/AH115
Northwest Harris Co. C26/A110/X15423839445053514445522635383841546051535056535256536954474737532Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP239131173941464637313820293128406154465455656466494710757454645491Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4512714414050483533362027322946685848485864756656616665484639481Seabrook Friendship Park C45
Houston Bayland Park C53/A146 13321495450473530422034313442605643679067746556598053454550571Houston Bayland Park C53/A146
Conroe Relocated C78/A32116039454478507061683234334246606965454552505037466567585333461Conroe Relocated C78/A321
Manvel Croix Park C84134155660484637264020362833445757477157827275575813555514450771Manvel Croix Park C84
Clinton C403/C304/AH113 32314393745413326301928292634453830536559625846486750343043533Clinton C403/C304/AH113
Houston North Wayside C40513326373948464034432134382738525342505553495048555871444145471Houston North Wayside C405
Houston Monroe C406126153841434233253320282628375046375348685760404110748434043551Houston Monroe C406
Lang C40823633425050444034472337343239535847575360575548568356464745492Lang C408
Houston Croquet C40923318525150453829432242303142575644777574737655587861454347582Houston Croquet C409
Houston Westhollow C41013428425547473831402339333338545341647068656255618555444143571Houston Westhollow C410
Houston Texas Avenue C41112921394346413730382037322734524939567259585849556472424143501Houston Texas Avenue C411
Park Place C41613317414448454131422235312938595342667165686545469653474244511Park Place C416
Sheldon C5511 N3520343447364636372229373339555546444850484742424557434542441Sheldon C551
Baytown Wetlands Center C5521 N2612323645393428311424282738575045515555576047436753434140421Baytown Wetlands Center C552
Crosby Library C5531 N4020323350415435442229423340565951434048464740384561444937441Crosby Library C553
West Houston C5541 N16192034303620192313231620162624NANANANANANANANANANANANANANA1West Houston C554
La Porte Sylvan Beach C5561 N2614343945413530301824262339584336323944565458546861454446471La Porte Sylvan Beach C556
Mercer Arboretum C5571 N4325364254455148482530453136496050433950444545455657454834441Mercer Arboretum C557
Tom Bass C5581 N2510394438393021321324182433444332574671555940449846413640611Tom Bass C558
Katy Park C5591 N3032395445503432392236323439505342606NA595652526244383635511Katy Park C559
Atascocita C5601 N4223313351425143472326422933465646414042434343454964434332391Atascocita C560
Meyer Park C5611 N4235404452474744542632413639506049484853495053576958484939501Meyer Park C561
Bunker Hill Village C5621 N3321425045433430422135312937495241566065585652597447444145531Bunker Hill Village C562
Huffman Wolf Road C5631 N3315222240304827402124392634475649363436373937383657424628341Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N35204041495344394724343529426362526070646864494610064515249631HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N3820434059505835442436394250726757626567586755507673555651611Wallisville Road C617
Danciger C618 1 N311553654747282234193225344253514248546267615863NANA464138601Danciger C618
Mustang Bayou C619 1 N2916604948473632362240243343515346505264566075747252484442501Mustang Bayou C619
Texas City 34th St. C620 1 N2211413243NA30323181291332333843515773606659698056564863531Texas City 34th St. C620
UH Moody Tower C6951 N3920504854534836492638353746666449679575757059658161544952591UH Moody Tower C695
U of H-Sugarland C6961 N3217425843463429332034303137505140757673717854598948433843551U of H-Sugarland C696
UH Coastal Center C6971 N2815644150453537342132232746555443555067555961666652474549461UH Coastal Center C697
UH WG Jones Forest C6981 N5226444368496052623234304142586758464553505152547363545029511UH WG Jones Forest C698
UH West Liberty C6991 N4728393857476842522834394043637865494348505248444977566236461UH West Liberty C699
Lynchburg Ferry C1015/A165 12719353848413532342128333539595545485363586143426457464442581Lynchburg Ferry C1015/A165
Lake Jackson C1016 13217694949483232382229223443625143455463626162897654504241561Lake Jackson C1016
Baytown Garth C101713618383754465335412234363844636153575961596250457365505145541Baytown Garth C1017
Galveston 99th St. C1034/A320/X183131NA475157534443452537283953635654515763575851526659574448511Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCOctober 2014POCMonitoring Site
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San Antonio
San Antonio Northwest C2325143486454564837343321414141505861495362686793706970475047572San Antonio Northwest C23
Camp Bullis C5816147557159655942393720324346586273515565686885787772515247661Camp Bullis C58
Calaveras Lake C5914333586551444032322923374245596248435254626565696458434248471Calaveras Lake C59
Elm Creek Elementary C5011 N4337546346393832313021423841555550434955606283666367424442481Elm Creek Elementary C501
Fair Oaks Ranch C5021 N5342456254645241363518324042496171465356596266616065454938541Fair Oaks Ranch C502
Bulverde Elementary C5031 N5540485756555838383317313942556571445258586062717367514644581Bulverde Elementary C503
New Braunfels Airport C5041 N4432525651484136363019413942666453415254565766707558424347471New Braunfels Airport C504
City of Garden Ridge C5051 N5340496255474934343121374144686854445356586076898164444252621City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N4537555754514335383019323840606255435459605963766959464443521Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N4535546651493831332822354346596651445456626569786757444152511Heritage Middle School C622
CPS Pecan Valley C6781 N5132476449404332342920433740556254404952575976816662434549551CPS Pecan Valley C678
AreaMonitoring SitePOCOctober 2014POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C423321566253392629312628285356575147395554676567787449434040412Corpus Christi West C4
Corpus Christi Tuloso C2113320556251312524NA2228324951544943344643626162717250423941441Corpus Christi Tuloso C21
Victoria C8713922566252393028302638354247595546435069716058637452434350511Victoria C87
Inez C6091 N3018465045362521272134353838424438434770636253626144423740471Inez C609
Coleto C6241 N3719435445302921252234244039515141364860655651596649383538451Coleto C624
Aransas Pass C6591 N2314515551392224272224235150564744365454686362737253464038451Aransas Pass C659
Holly Road C6601 N2515495746342024252123204443464340314851636059727044413637371Holly Road C660
Violet C6641 N3018535947262121272025254448494540294547616163738146383546481Violet C664
Ingleside C6851 N2516465248352224272327254346504642335047585957706949423938411Ingleside C685
Odem C6861 N3321525348332726302429314851574943304747585858666844383738391Odem C686
Taft C6871 N3822606055413328312731304854635247365152656566748155454246441Taft C687
Cuero C16021 N4528545453484333343033334449726352445863727661687959464645491Cuero C1602
AreaMonitoring SitePOCOctober 2014POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP14312222454540293222211828233135513936303743364449536739NA2944461Mission C43/AP143
Brownsville C80/AGP18012324616246272226242121214043584335264040514850565243393635341Brownsville C80/AGP180
Harlingen Teege C10231NANA494949344129322428264448535239314546505656665548424140411Harlingen Teege C1023
AreaMonitoring SitePOCOctober 2014POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P24413326535241343229302628334045474642273741454856626346383938361Laredo 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.