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Peak Daily One-Hour Ozone Averages for June 2017

The table below lists the peak daily one-hour ozone concentrations measured in June 2017 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 SitePOCJune 2017POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 258355355486376745458464134333943333170747433762Ft. Worth Northwest C13/AH302
Keller C17259385150426370806060514536344445343356726737892Keller C17
Frisco C31/C680148375353446466795866545037365051383754535227841Frisco C31/C680
Midlothian OFW C52/A137151394854586791655561524534314137293053595348511Midlothian OFW C52/A137
Denton Airport South C56/A163/X157150365154376166876765534940374950454146606030801Denton Airport South C56/A163/X157
Arlington Municipal Airport C61152314851496083644653433826253733242665625941551Arlington Municipal Airport C61
Dallas North No.2 C63/C679152376056486369815264534838324042353363604827741Dallas North No.2 C63/C679
Rockwall Heath C69154344950426262635361554239312834373541604726591Rockwall Heath C69
Grapevine Fairway C70/A301/X182157365357436175875563514336334145343555565833841Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X071148335049395763584861554236332840343537535035421Kaufman C71/A304/X071
Granbury C73/C681157344948486567666157454247313845403236648137521Granbury C73/C681
Eagle Mountain Lake C75 154384849426561795760504839364246393653776533821Eagle Mountain Lake C75
Parker County C76155364744446163665656454145303543373249837236761Parker County C76
Cleburne Airport C77/C682162365253597497716667524737374448353445666846591Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 349335460486373754558514230273536292962574629673Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C402151354552495971614457463933273332282960NA4835531Dallas Executive Airport C402
Greenville C1006/A198141294344396461615462473829332945383533494525501Greenville C1006/A198
Pilot Point C1032146364849376160826065545140395455404040495526741Pilot Point C1032
Italy C1044/A323147364143485677595559504332283031272630455546451Italy C1044/A323
Corsicana Airport C1051146364547455667655167545041333634393538504339481Corsicana Airport C1051
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644244354037574961655859503125342626222454422525312Longview C19/A127/C644
Tyler Airport Relocated C82144423946495969654858463423332629252236452527351Tyler Airport Relocated C82
Karnack C85/AFHP303139253936385561565662492723254545253444382121391Karnack C85/AFHP303
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X151260726383808279576055444642817565645872565664662El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X159154795376716767596150414140717761625559465457591Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 157796184797774636259484955878472705962485863591Chamizal C41/AH126
Socorro Hueco C49/F312150654867646253606748384141637761604948395458561Socorro Hueco C49/F312
Skyline Park C7215868496868NANA565654464551746664656060486757641Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N55546464686159575657545350485052655948405051593BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C414151744672606460625950414239727663625054465856591Ivanhoe C414
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Waco
Waco Mazanec C1037141384448485966696262494130313434313137494540441Waco Mazanec C1037
Temple Georgia C1045142384050567378697065555036333941343440555843541Temple Georgia C1045
Killeen Skylark Field C1047148383553507468707160504446395152423239545446671Killeen Skylark Field C1047
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 227282936433355537751372320172120202048251639182Beaumont-Downtown C2/A112/C2002
West Orange C9/A141224252037382944NANANANA2018242423232242221741192West Orange C9/A141
Port Arthur West C28/A128/A228125272544474255636759482621192118201821NA1843171Port Arthur West C28/A128/A228
Hamshire C64/C654128252349483856676556373021172319212143321939171Hamshire C64/C654
SETRPC 40 Sabine Pass C640/C1654127282347495157606055452820232223232124352346191SETRPC 40 Sabine Pass C640/C1654
SETRPC 43 Jefferson Co Airport C643125272541464264646856472822222423232051271841191SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 125272539444055507053402721202221212151251843201Nederland High School C1035
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Austin
Austin Northwest C3/A322242384145566572766754494236303535313345535747492Austin Northwest C3/A322
Audubon C38143403439506670776155494539323838353143565840541Audubon C38
Fayette County C6012 N41453545494866716160474026283028252727433540362Fayette County C601
Dripping Springs School C6141 N40364245476365705652484436323742363239515757481Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N30363445465062636651433728263129282628494537371CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N43434249546869777163514544374446393642585845601CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N36323841456164665951454133293431313044394540351Gorzycki Middle School C1603
Lockhart C16041 N31293643535381656753474332273130303141646951461Lockhart C1604
St. Edwards University C16051 N37293745485870666048443729263030282936485237411St. Edwards University C1605
CAPCOG San Marcos Staples Road C16751 N35333949465675656451484031293532302830505560441CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N36404647536370706851454332283632302833545444421CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G316228265745613948687254443523232928212562251738312Houston East C1/G316
Houston Aldine C8/AF108/X150 234326257584358698262524626303740272961312840402Houston Aldine C8/AF108/X150
Channelview C15/AH115 32624444662NANANANANANANANA153128232654261940313Channelview C15/AH115
Northwest Harris Co. C26/A110/X154243434948493861678964585531343530253539373140462Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP239125203235554752776552373022192524192066291839251Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4512927304356525363696148NA23232426222138321843211Seabrook Friendship Park C45
Houston Bayland Park C53/A146 1292958596347628164534234NA242327192281382436291Houston Bayland Park C53/A146
Conroe Relocated C78/A321137303745413857568471584437463956444034352827581Conroe Relocated C78/A321
Manvel Croix Park C841323038465359681026755443224232822212566473045291Manvel Croix Park C84
Clinton C403/C304/AH113 327275341594555726756433419212723202575312434273Clinton C403/C304/AH113
Houston North Wayside C405126275450514052606651433421222624192356262234301Houston North Wayside C405
Houston Monroe C406124233841484547795643362617182318172075312035271Houston Monroe C406
Lang C408230315951513852707052463723253035242369332434332Lang C408
Houston Croquet C409228275356574958855951393321232222202384393338282Houston Croquet C409
Houston Westhollow C41013139665252416079635242362122282218NA73393237341Houston Westhollow C410
Park Place C416128274345544550716247403318192421172178292033261Park Place C416
Sheldon C5511 N25233133383138404338292821222626232432252328271Sheldon C551
Baytown Wetlands Center C5521 N161215253524405245433515131413121211301691471Baytown Wetlands Center C552
Crosby Library C5531 N36234339583354586162372522294238313249293036321Crosby Library C553
La Porte Sylvan Beach C5561 N20191925302529323434282019181819181827201616151La Porte Sylvan Beach C556
Mercer Arboretum C5571 N33333438433643445446413833343640313233292934401Mercer Arboretum C557
Tom Bass C5581 N24233244NANANANA6047362818202419182273352437261Tom Bass C558
Katy Park C5591 N23343835413149675742353019212918172235312630251Katy Park C559
Atascocita C5601 N1010181829102227392818171012181711132110816161Atascocita C560
Meyer Park C5611 N27273438362744516849473823253528252322232025331Meyer Park C561
Clear Brook High School C5701 N29222737514953816349373018182421202071392042231Clear Brook High School C570
Clear Creek High School C5711 N23192038525254665947362314161821191758301738181Clear Creek High School C571
HRM-3 Haden Road C603/A114 1 N28255039664251697251403523222826222567291936311HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N28273639543953626154412621283030252351262240281Wallisville Road C617
Danciger C618 1 N26272838484271775444372717161816181824484044231Danciger C618
Texas City 34th St. C620 1 N33302546556755696965513323222322232238382244221Texas City 34th St. C620
UH Moody Tower C6951 N31326151654959787354453320242825202386322537311UH Moody Tower C695
U of H-Sugarland C6961 N33324744534672956153453822212624212365463642301U of H-Sugarland C696
UH Coastal Center C6971 N28282447535956726452463019191920211946292141191UH Coastal Center C697
UH WG Jones Forest C6981 N37353951493959648471615139435044413539353038521UH WG Jones Forest C698
UH West Liberty C6991 N30263129403250495752382318293940302633261938361UH West Liberty C699
Lake Jackson C1016 130252741444568735850443121202118212026473142221Lake Jackson C1016
Baytown Garth C1017131303941573855646660402821273130252552272242311Baytown Garth C1017
Galveston 99th St. C1034/A320/X183131312953618359787272563322232320222039NA1949211Galveston 99th St. C1034/A320/X183
Oyster Creek C1607 1 N27242339514959725855452922192019181820432540171Oyster Creek C1607
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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San Antonio
San Antonio Northwest C23248454246545764836058505037303438383450585461522San Antonio Northwest C23
Camp Bullis C58 143465045505866946063525239313841403646555567601Camp Bullis C58
Calaveras Lake C59134343851605370745653463833283031323036536467451Calaveras Lake C59
Elm Creek Elementary C5011 N41373948535673686354464136303235383242655559481Elm Creek Elementary C501
Fair Oaks Ranch C5021 N40444842465661856163525240313841393742515162591Fair Oaks Ranch C502
Bulverde Elementary C5031 N394353424558651026461504541324348423543535674611Bulverde Elementary C503
New Braunfels Airport C5041 N33303746425569716451463831282928282830515665451New Braunfels Airport C504
City of Garden Ridge C5051 N36344851465967906555494235283138323039596178451City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N33303344445168666650463830282728272727465361441Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N34343754635672845956484035293233333235566670471Heritage Middle School C622
CPS Pecan Valley C6781 N3230335151486570534941363117125292634525460401CPS Pecan Valley C678
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C4229262643515262586351433123221921242319575255282Corpus Christi West C4
Corpus Christi Tuloso C21130303638505150616450423122211821232324505741261Corpus Christi Tuloso C21
Victoria C87127333446534965617356453519242323242432404155341Victoria C87
Inez C6091 N25312943444864586154433618191920202126383357291Inez C609
Holly Road C6601 NNANA2948525466576955483023221919222417615044281Holly Road C660
Violet C6641 N22323842535661626752413025222022262428545843301Violet C664
Ingleside C6851 N28272746514452596853473023221718212018533941261Ingleside C685
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP143134353645515258685345373528212326262435454649341Mission C43/AP143
Brownsville C80/AGP180128202436485852575045342821191922232217444238261Brownsville C80/AGP180
Harlingen Teege C1023133252931535659635649393825232323232524484644351Harlingen Teege C1023
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P244126223333434358604742292834212726292720374764361Laredo 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 - 0.054
51 - 100 Not Defined 0.055 - 0.070
101 - 150 0.125 - 0.164 0.071 - 0.085
151 - 200 0.165 - 0.204 0.086 - 0.105
201 - 300 0.205 - 0.404 0.106 - 0.200
301 - 400 0.405 - 0.504 Not Defined
401 - 500 Not Defined 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, 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.