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Daily Maximum Eight-Hour Ozone Averages for September 2014

The table below lists the peak daily maximum eight-hour ozone concentrations measured in September 2014 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 SitePOCSeptember 2014POCMonitoring Site
12345678910111213141516171819202122
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 2333633303949435656372716244151575241294165NA2Ft. Worth Northwest C13/AH302
Keller C172333532314047405754372415234157664638334366NA2Keller C17
Frisco C31/C6801384140395444416963452615223553475736405056NA1Frisco C31/C680
Midlothian OFW C52/A1371303132283749505152373614223238393533304345NA1Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571394538365241386765432014243866555333415158NA1Denton Airport South C56/A163/X157
Arlington Municipal Airport C611283029263652465051343012213547483736274152NA1Arlington Municipal Airport C61
Dallas North No.2 C63/C6791353536NV4551405755402913193648524733374558NA1Dallas North No.2 C63/C679
Rockwall Heath C691363539384745396060372615203643494736414952NA1Rockwall Heath C69
Grapevine Fairway C70/A301/X1821343837334949436461412816234060NV5437384765NA1Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711333537404343435355333318163432393632384548NA1Kaufman C71/A304/X071
Granbury C73/C6811343531293337434950373116283741463735363851NA1Granbury C73/C681
Eagle Mountain Lake C75 1293328273640365049342014234052634034294256NA1Eagle Mountain Lake C75
Parker County C761282925242840364644301512243946503531343856NA1Parker County C76
Cleburne Airport C77/C6821353535313843505456393914253345443736344350NA1Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3333234314359455554383113214051NANV37344463NA3Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C40213233NV30NV62495154383612193742453433294053NA1Dallas Executive Airport C402
Greenville C1006/A1981313434354540305457361515173441494234424848NA1Greenville C1006/A198
Pilot Point C10321404341405640357169502117253259455736384852NA1Pilot Point C1032
Italy C1044/A323131NV35293839485051354012212738363629314347NA1Italy C1044/A323
Corsicana Airport C10511363644414243465656352726183231403830304648NA1Corsicana Airport C1051
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644227262736414937664429251620393738NV36445053NA2Longview C19/A127/C644
Tyler Airport Relocated C821282925304046434346293421213437NV3331NANANANA1Tyler Airport Relocated C82
Karnack C85/AFHP3031272728374338284042273017183128283724324750NA1Karnack C85/AFHP303
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X1512445051333131253931353232302922323826275034NA2El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X1591384641303028263626342929272620243322264731NA1Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 145494431292623NVNANANV26262618223421295131NA1Chamizal C41/AH126
Socorro Hueco C49/F3121465741343129273434413534272721323225335630NA1Socorro Hueco C49/F312
Skyline Park C721435650353430245236363534302825253425284131NA1Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N2623181614563636403531222025323733333230NA3BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C4141384437272724223330NVNVNANANA16202619293823NA1Ivanhoe C414
Cd Juarez Delphi C6631 N2837312423222127202623242120151924NVNANANANA1Cd Juarez Delphi C663
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Waco
Waco Mazanec C10371333332293841425550NV3716202830393625304751NA1Waco Mazanec C1037
Temple Georgia C10451353332293637495952414529243443453726354356NA1Temple Georgia C1045
Killeen Skylark Field C10471393532303640465961454531253645454029373956NA1Killeen Skylark Field C1047
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
12345678910111213141516171819202122
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2282527323230424448172524142040212018224345NA2Beaumont-Downtown C2/A112/C2002
West Orange C9/A1412252326322229373547202624142136NV2520264342NA2West Orange C9/A141
Port Arthur West C28/A128/A2281272530272424475244172025152333211918304245NA1Port Arthur West C28/A128/A228
Hamshire C64/C65412524221923233549431823251726NV191818214349NA1Hamshire C64/C654
SETRPC Port Arthur C6281 N262222232121414641171923131827181416243439NA1SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C16541292627192524424041192226193130212120284249NA1SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N262526312829303251223424121844252017244137NA1SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C6431302931312830515351252729172440292825324957NA1SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 1262628312931434647192525162135242120274147NA1Nederland High School C1035
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Austin
Austin Northwest C3/A3222343328213438456243NV3436122638383738283048NA2Austin Northwest C3/A322
Audubon C381373631273739416249374033142744464035303150NA1Audubon C38
Fayette County C6012 N302929253130465038282826172939322927243947NA2Fayette County C601
Dripping Springs School C6141 N333327253335415145353333172545443632272848NA1Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N252423202523394336252724102133282730202539NA1CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N35342928363840625139403517NVNVNV4131303348NA1CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N272622202527354434252729112136322928222542NA1Gorzycki Middle School C1603
Lockhart C16041 N313027223134455239293328142741353029213247NA1Lockhart C1604
CAPCOG San Marcos Staples Road C16751 N282723232525363935232524112636292522162237NA1CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N242221192324333930232225111925292322232429NA1CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G316228242725233531484221331213183520109194048NA2Houston East C1/G316
Houston Aldine C8/AF108/X150 2272428243129314246213913162132251511NVNANANA2Houston Aldine C8/AF108/X150
Channelview C15/AH115 323212021224430424320331615193219119163845NA3Channelview C15/AH115
Northwest Harris Co. C26/A110/X1542323339334333325647243928202441352417284346NA2Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23912623262722293358401828191421352015122037NVNA1Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C451232322252225365239122322152439191614NVNANANA1Seabrook Friendship Park C45
Houston Bayland Park C53/A146 1232423272731327433162617172750241814224859NA1Houston Bayland Park C53/A146
Conroe Relocated C78/A3211424137443535343867365125202735272618274047NA1Conroe Relocated C78/A321
Manvel Croix Park C841232322232120306426151923172740211715193751NA1Manvel Croix Park C84
Clinton C403/C304/AH113 324172321202931492915241516214114109173849NA3Clinton C403/C304/AH113
Houston North Wayside C405126232719263334444018341217223219118184346NA1Houston North Wayside C405
Houston Monroe C4061202024201921296032172117132036181511173745NA1Houston Monroe C406
Lang C408226252724293536624222361517233824139204447NA2Lang C408
Houston Croquet C4092242524252526337434182723192652241916224259NA2Houston Croquet C409
Houston Westhollow C4101242625242628327236203022202752252118255053NA1Houston Westhollow C410
Houston Texas Avenue C4111222126202429335435172513162339191111174148NA1Houston Texas Avenue C411
Park Place C4161232429222429326238202514142041201311194153NA1Park Place C416
Sheldon C5511 NNANANANANANANANANV213416161828201411193741NA1Sheldon C551
Baytown Wetlands Center C5521 N221920232027264640132719142030181111163544NA1Baytown Wetlands Center C552
Crosby Library C5531 N232522242432273350204216141729221411193942NA1Crosby Library C553
West Houston C5541 NNANANANANANANANANANV2120191923181212133135NA1West Houston C554
La Porte Sylvan Beach C5561 NNANANANANANANANANANV2322152132191615203440NA1La Porte Sylvan Beach C556
Mercer Arboretum C5571 N262832323631283554264421172030231713203939NA1Mercer Arboretum C557
Tom Bass C5581 N14141414131321522210141410173215117133242NA1Tom Bass C558
Katy Park C5591 N282526262726335932192726202543302222264750NA1Katy Park C559
Atascocita C5601 N282626282730283049233814141828241613213938NA1Atascocita C560
Meyer Park C5611 N303037314434345050284524202536312015254443NA1Meyer Park C561
Bunker Hill Village C5621 N232524242530306235203117182540231411184347NA1Bunker Hill Village C562
Huffman Wolf Road C5631 N172016171620192144163212812201496133229NA1Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N26242525234033514222331815204022129204252NA1HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N292925292541355056204224182439251915234653NA1Wallisville Road C617
Danciger C618 1 N222321201821194922161822242941211714183749NA1Danciger C618
Mustang Bayou C619 1 N242423241923276030152227172937221815224246NA1Mustang Bayou C619
Texas City 34th St. C620 1 N242324221818284422111419141931191612243838NA1Texas City 34th St. C620
UH Moody Tower C6951 N272833282935407144233219202750251712214961NA1UH Moody Tower C695
U of H-Sugarland C6961 N2423NV212323266428182324212847221916194259NA1U of H-Sugarland C696
UH Coastal Center C6971 N242425252020335830142126172539211715264244NA1UH Coastal Center C697
UH WG Jones Forest C6981 N403735NV4240374263344926202735302516253846NA1UH WG Jones Forest C698
UH West Liberty C6991 NNV2925282730333660295024172133NV2217234947NA1UH West Liberty C699
Lynchburg Ferry C1015/A165 1222221232238264641182919141830151413173540NA1Lynchburg Ferry C1015/A165
Lake Jackson C1016 12324222017212355NV161923223437211915204046NA1Lake Jackson C1016
Baytown Garth C10171262724262338324751203923172237241916234348NA1Baytown Garth C1017
Galveston 99th St. C1034/A320/X1831282828NV2525397346202632222842282422405051NA1Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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San Antonio
San Antonio Northwest C232343425213642425139313535203247403533293252NA2San Antonio Northwest C23
Camp Bullis C581373727243748325944373833193148403940293454NA1Camp Bullis C58
Calaveras Lake C591313022193137374635272923173542343628283149NA1Calaveras Lake C59
Elm Creek Elementary C5011 N313122203331374333262728194037333125293145NA1Elm Creek Elementary C501
Fair Oaks Ranch C5021 N333323223341295339313426152333333232232742NA1Fair Oaks Ranch C502
Bulverde Elementary C5031 N373525243844295947403630182837374135252948NA1Bulverde Elementary C503
New Braunfels Airport C5041 N323126233436464739293330143042333428222646NA1New Braunfels Airport C504
City of Garden Ridge C5051 N252418172729324031252425152534252720151834NA1City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N333227243538424439303328132943333426253049NA1Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N322923233335404536283026183540333729293249NA1Heritage Middle School C622
CPS Pecan Valley C6781 N3533242130NANANV39313126183941353631293048NA1CPS Pecan Valley C678
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C42252825202025272523212327273249302520253349NA2Corpus Christi West C4
Corpus Christi Tuloso C211242623NV1722252721192227253042262518232641NA1Corpus Christi Tuloso C21
Victoria C871262724192227284826222624212842263020223351NA1Victoria C87
Inez C6091 N232523192020263620192024222738252617213122NA1Inez C609
Coleto C6241 N192019151720233321181716142235202116142641NA1Coleto C624
Aransas Pass C6591 N232521161723201818182023232943251916213445NA1Aransas Pass C659
Holly Road C6601 N242724202023242120202327232841241917253753NA1Holly Road C660
Violet C6641 N212322161520232018151822242943232214212240NA1Violet C664
Ingleside C6851 N232521181922201719192023242839252017223040NA1Ingleside C685
Odem C6861 N232623192224232823202326242939272419252639NA1Odem C686
Taft C6871 N262925212227272325222430283345312722293145NA1Taft C687
Cuero C16021 N282726172628364626263025163139272824203555NA1Cuero C1602
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP1431282725181719242420192127222631342014221626NA1Mission C43/AP143
Brownsville C80/AGP1801232426171417221718182023232325271817211529NA1Brownsville C80/AGP180
Harlingen Teege C10231262628222023262625222625242934321918221633NA1Harlingen Teege C1023
AreaMonitoring SitePOCSeptember 2014POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P2441NANANV181622242222232315192231262319191729NA1Laredo 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.