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Peak Daily One-Hour Ozone Averages for January 2015

The table below lists the peak daily one-hour ozone concentrations measured in January 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 SitePOCJanuary 2015POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 21210323327253630323019172223344140424561333535364131292Ft. Worth Northwest C13/AH302
Keller C1721111323128263528323119162222303837414560373530333836342Keller C17
Frisco C31/C68011416233329293529353123192223333839444159433834354137341Frisco C31/C680
Midlothian OFW C52/A13711110293232223531313125212125284040414548383333324139361Midlothian OFW C52/A137
Denton Airport South C56/A163/X15711314383528283530353122182624364443464261423736384241401Denton Airport South C56/A163/X157
Arlington Municipal Airport C61188313230183430303024182123293838414544373532313938361Arlington Municipal Airport C61
Dallas North No.2 C63/C67911110243227263229303023161921283939434061403532333934311Dallas North No.2 C63/C679
Rockwall Heath C6911420213433344032383427202323323844445265463935354233381Rockwall Heath C69
Grapevine Fairway C70/A301/X18211414313328283732353222192425334040434063413734344037301Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X07111717233333303730333326172224273844434943423635274040391Kaufman C71/A304/X071
Granbury C73/C6811129393231343532322919202024303839424656343533324042401Granbury C73/C681
Eagle Mountain Lake C75 11214363130253531332918172421323940414758363431323634361Eagle Mountain Lake C75
Parker County C7611411423636364137373324202526344546465269394037384444431Parker County C76
Cleburne Airport C77/C68211110383334273533302922202019314140434763413634344242441Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3109243428263431323422NA161928363744NA42423734314236333Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C402188232926183229293021161814263437404435383333293738321Dallas Executive Airport C402
Greenville C1006/A19811520193332313733353023192426313642425159433635364133401Greenville C1006/A198
Pilot Point C103211518273228293628352822182525333139433255393634354138381Pilot Point C1032
Italy C1044/A32311215273032283430283024201719273640414832373532324038401Italy C1044/A323
Corsicana Airport C10511151323323331363132322421192526394443523737NA30344240391Corsicana Airport C1051
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C64421714133031283538333319192230354547475252443534394343582Longview C19/A127/C644
Tyler Airport Relocated C82120141832383836373533262120323443484654NA443936324242441Tyler Airport Relocated C82
Karnack C85/AFHP30311815143034333737313428202527344148485451443631414041421Karnack C85/AFHP303
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X15122526453830273427242931311420243539423941453840364133352El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15912317393331243327272425281622312929373035413035383733341Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 12620473535223027223132271219323640454036393239414036321Chamizal C41/AH126
Socorro Hueco C49/F31212725463933263728282834301724283936474443443635404030441Socorro Hueco C49/F312
Skyline Park C7212633474337373431282933302024363941454139483742424241351Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N1714NANANA344030262527311921282942443744483736404439313BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C41412119413533303228252628291620323337403230382935363635311Ivanhoe C414
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Waco
Waco Mazanec C103711214323133363531292924201717334142455441343732384341431Waco Mazanec C1037
Temple Georgia C1045198192623242827262823191819323942455654303734394447501Temple Georgia C1045
Killeen Skylark Field C104711414363535433833263124202123354246505463314037444651501Killeen Skylark Field C1047
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 21921242729433534222921201821324354534852473429454738592Beaumont-Downtown C2/A112/C2002
West Orange C9/A14122019192327313233222823201921273848444652473328404437552West Orange C9/A141
Port Arthur West C28/A128/A22811821222528403433233127211921313949454648543432424739601Port Arthur West C28/A128/A228
Hamshire C64/C65411823232831453633242823231919304457534952523633454840641Hamshire C64/C654
SETRPC Port Arthur C6281 N2631303130302323152829252125344353465151533834445143631SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C165412223222627373333262928232021293849394347393531404837491SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N2121232729463535263226241921324251455055443630424640511SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C6431NANANANANA163131202722191618283945424447493229394536581SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 12023232629433434242725211821323745474849493432424738611Nederland High School C1035
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Austin
Austin Northwest C3/A3222109293325413331212319161516283839465753283330404140482Austin Northwest C3/A322
Audubon C381109323331403432262622161717313139465554293531354245531Audubon C38
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G3162151392825253032162217141316283646645459313930454137472Houston East C1/G316
Houston Aldine C8/AF108/X150 21717142925253433212720181524343850515859404032454438602Houston Aldine C8/AF108/X150
Channelview C15/AH115 31613102927163231202317191618323844464750323530434335533Channelview C15/AH115
Northwest Harris Co. C26/A110/X15422518172927343429242522221526334444465556343231394040492Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP239115652724253130192418171615293545424651394127413829471Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4511910132925323134252520171918304349474165444528464634371Seabrook Friendship Park C45
Houston Bayland Park C53/A146 11514122924283132242218151520312945525153364430443937541Houston Bayland Park C53/A146
Conroe Relocated C78/A32113023173035393635272924211928334247506062393332414240521Conroe Relocated C78/A321
Manvel Croix Park C8411610133124353232242319181418283445475360434530444238551Manvel Croix Park C84
Clinton C403/C304/AH113 3151392822183131202218151517293437533840313928353429453Clinton C403/C304/AH113
Houston North Wayside C4051151482526132930202319141417272437534746303727313432391Houston North Wayside C405
Houston Monroe C406114782421272628162116151315262940454647374026393833381Houston Monroe C406
Lang C40821517132824293032172219161221282945465154303629414137522Lang C408
Houston Croquet C40921612132923363031182214171318312845505356394730464038532Houston Croquet C409
Houston Westhollow C41011516142822323129242117171419283443494850344028413735511Houston Westhollow C410
Houston Texas Avenue C4111141182521212730162016151117222341554443283727393631471Houston Texas Avenue C411
Park Place C416113992517252828152110131214272742515054374326413933391Park Place C416
Sheldon C5511 N1614112829143231232518191720293642504748333429394034531Sheldon C551
Baytown Wetlands Center C5521 N141042323262727212216NA1313222629272840292820302923341Baytown Wetlands Center C552
Crosby Library C5531 N151292528213031222517181618303843464856414128404035531Crosby Library C553
West Houston C5541 N1917142822333228232220191521293745495255324431424037501West Houston C554
La Porte Sylvan Beach C5561 N181073027343134212721171717313043424255403930454236401La Porte Sylvan Beach C556
Mercer Arboretum C5571 N1917112528283130212619171522283442414951403526373834531Mercer Arboretum C557
Tom Bass C5581 N14982519262827152115141315252837404649374126383630431Tom Bass C558
Katy Park C5591 N2017132424282925222118171322253338384544273626383433431Katy Park C559
Atascocita C5601 N1413102526212828192417151418273239404648373225343531461Atascocita C560
Meyer Park C5611 N2220162929303330222721191522303644455253353330403937511Meyer Park C561
Bunker Hill Village C5621 N1515122622293229182117151220292643464849274127403635481Bunker Hill Village C562
Huffman Wolf Road C5631 N14NA11242619NANANA2619201721324245425261453229404137511Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N1714103026233332202620171418334147555564384132464437521HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N2014113335313835272922252122394855505466444236484941661Wallisville Road C617
Danciger C618 1 N1716203234463636302620212022334848525450475031484741591Danciger C618
Mustang Bayou C619 1 N189103032443434252723201517304449434954455129444538471Mustang Bayou C619
Texas City 34th St. C620 1 N2019213031323636322924231920324655465162464933474835451Texas City 34th St. C620
UH Moody Tower C6951 N1815143025353532192317181118293046615458334430464238481UH Moody Tower C695
U of H-Sugarland C6961 N1515132721383030262016161417273344504951424628413736491U of H-Sugarland C696
UH Coastal Center C6971 N1618182425313031232420171615293439283150364126353531411UH Coastal Center C697
UH WG Jones Forest C6981 N2721173032393633243022201828334446505961393232414241561UH WG Jones Forest C698
UH West Liberty C6991 N1717133133303637263221221922364651455868463633444442541UH West Liberty C699
Lynchburg Ferry C1015/A165 1171062725252630212317161516292934383541333930403732431Lynchburg Ferry C1015/A165
Lake Jackson C1016 1199103333453333272521181717334446495448495432464842591Lake Jackson C1016
Baytown Garth C10171171292830263434272821232121374953495366464134464739641Baytown Garth C1017
Galveston 99th St. C1034/A320/X183116252529284534372531NANANANANA4656514556485334444842501Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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San Antonio
San Antonio Northwest C232129353627363635252424181716323844496248353635414138482San Antonio Northwest C23
Camp Bullis C581NA10363330393736262421201815323945475350333435464344471Camp Bullis C58
Calaveras Lake C591119313529423332222321171613313849496161303131423743471Calaveras Lake C59
Heritage Middle School C6221 N129313330423231222222171512303949466158333432414043451Heritage Middle School C622
CPS Pecan Valley C6781 N84262825363131212120131410293948486454313030393940461CPS Pecan Valley C678
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C42166173832393429281821191913294339474450413430424344502Corpus Christi West C4
Corpus Christi Tuloso C211177193836363532281924201716304153495349373131444644491Corpus Christi Tuloso C21
Victoria C8711911213233413332242122192220334445505953404230454240511Victoria C87
Aransas Pass C6591 NNANANANANANANANANANANANANANANANANANANANANANANANANA43551Aransas Pass C659
Holly Road C6601 N141113529353429301819161612264037484646393227403940471Holly Road C660
Violet C6641 N145193830413429251822201514293648485151373333433925251Violet C664
Odem C6861 N157193632363630252022201715304145465251383132434545481Odem C686
Taft C6871 N189224038434036302326232420354746504842444136473231301Taft C687
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP143111814322529262319152730119213633433538272024303135431Mission C43/AP143
Brownsville C80/AGP1801975313136332220132630139203535474140302727423141431Brownsville C80/AGP180
Harlingen Teege C102311711144035413930232130361812264043565048363232414045501Harlingen Teege C1023
AreaMonitoring SitePOCJanuary 2015POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P24419829372632262721162130710283623465064372630393735481Laredo 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.