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Daily Maximum Eight-Hour Ozone Averages for June 2017

The table below lists the peak daily maximum eight-hour ozone concentrations measured in June 2017 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 SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 2483047454359697050554439333034373029486666302Ft. Worth Northwest C13/AH302
Keller C172523347453959667253584642333139413231446461312Keller C17
Frisco C31/C6801433446513861637253625046343342433534404950221Frisco C31/C680
Midlothian OFW C52/A1371473545484562776052584842313034322727414951431Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571442946493357628058625048363545463635395355261Denton Airport South C56/A163/X157
Arlington Municipal Airport C611422741463355715943493834242329272222465653351Arlington Municipal Airport C61
Dallas North No.2 C63/C6791413149513659667247604844333035373129445446241Dallas North No.2 C63/C679
Rockwall Heath C691422843473454595948584838312726323328354944221Rockwall Heath C69
Grapevine Fairway C70/A301/X1821463245514056667850584641323139392931455353281Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711433040463651615745574737292826312827324643291Kaufman C71/A304/X071
Granbury C73/C6811523245454459656356554439412834383329325971321Granbury C73/C681
Eagle Mountain Lake C75 1493143423660527152574846373338413532396360291Eagle Mountain Lake C75
Parker County C761493042414057606452544339382733373229376665281Parker County C76
Cleburne Airport C77/C6821533447495168846861624944353436403230395963411Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 341284352375767693855453927263031252542524353Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C402143313846385365574152413727242830242443NANV291Dallas Executive Airport C402
Greenville C1006/A1981342736403454595850594434263027372927294541221Greenville C1006/A198
Pilot Point C10321422742463559587656634948363647493634354651231Pilot Point C1032
Italy C1044/A3231433238404253665649554640272528282423264145341Italy C1044/A323
Corsicana Airport C10511413041434049636046624945363130303229324437311Corsicana Airport C1051
AreaMonitoring SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
Tyler-Longview-Marshall
Longview C19/A127/C6442403032314744576155564528232725221921443822212Longview C19/A127/C644
Tyler Airport Relocated C821423531404550626343544130202924262020324223211Tyler Airport Relocated C82
Karnack C85/AFHP3031362226283641565153584324202335322125353719161Karnack C85/AFHP303
AreaMonitoring SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
El Paso-Juarez
El Paso UTEP C12/A125/X1512546457737175725555524344406361596155645152592El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X1591496951676662605655473939365861535950544251541Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 1506858746869675960564648456767646753544255601Chamizal C41/AH126
Socorro Hueco C49/F3121475846635757515658473739365560535845453544521Socorro Hueco C49/F312
Skyline Park C72154574863NVNANANV54534344456259606150574460541Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N52525762665157545355514947NVNV456153433849493BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C4141476344635456555654483940375863586047493953531Ivanhoe C414
AreaMonitoring SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
Waco
Waco Mazanec C10371393437424453606456584640282832292827294343351Waco Mazanec C1037
Temple Georgia C10451393632465164726666615043343037373129305254351Temple Georgia C1045
Killeen Skylark Field C10471403430464764666766564741393542423830304852391Killeen Skylark Field C1047
AreaMonitoring SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 22224253138NV524868502918181519171918412314312Beaumont-Downtown C2/A112/C2002
West Orange C9/A141222231835NVNVNVNANANANANVNV2021202120322115322West Orange C9/A141
Port Arthur West C28/A128/A2281242520384237485464534021191719NVNVNVNVNANV321Port Arthur West C28/A128/A228
Hamshire C64/C6541252420384335525961513225191620171818302817291Hamshire C64/C654
SETRPC 40 Sabine Pass C640/C1654126252042464354NV58533821182019202118212620351SETRPC 40 Sabine Pass C640/C1654
SETRPC 43 Jefferson Co Airport C6431242621374136NVNV64534023212022202218342416321SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 1232521343935514765513122191820182018402315331Nederland High School C1035
AreaMonitoring SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
Austin
Austin Northwest C3/A3222353336404955697159514640312732322929335153352Austin Northwest C3/A322
Audubon C381363330344256657356524642352835333129325156341Audubon C38
Fayette County C6012 N333532384545646756554537232527252325253930352Fayette County C601
Dripping Springs School C6141 N343337374254626854514639332833363329324855381Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N282930384146596062484134252427262524234341321CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N393734424858677567584943403440393634315456351CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N302935363855606254504337302630282827323743301Gorzycki Middle School C1603
Lockhart C16041 N292732374649746360524438282528272727305559441Lockhart C1604
St. Edwards University C16051 N302732384250666152474134272326262525274649311St. Edwards University C1605
CAPCOG San Marcos Staples Road C16751 N322935414247696356504536282630272726274553491CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N333235424654676662494439302631282826264949371CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
Houston-Galveston-Brazoria
Houston East C1/G3162251636354733455860503929212126242022462215302Houston East C1/G316
Houston Aldine C8/AF108/X150 231283942NV37546270554636222634332526462923332Houston Aldine C8/AF108/X150
Channelview C15/AH115 32420303250NANANANANANANANANV27252222402317303Channelview C15/AH115
Northwest Harris Co. C26/A110/X1542363541424136596276585045283132282431293427342Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP2391231825314732506460483324201722211818432516281Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4512724253850414959645544NANV2021222020312715321Seabrook Friendship Park C45
Houston Bayland Park C53/A146 1282444415041597360493829NANV21221820613520301Houston Bayland Park C53/A146
Conroe Relocated C78/A32113128284037355453736548383241NVNV3634273224221Conroe Relocated C78/A321
Manvel Croix Park C841302732394651658762513727222126212022484224341Manvel Croix Park C84
Clinton C403/C304/AH113 3252235364439526358494127171925211923512920283Clinton C403/C304/AH113
Houston North Wayside C4051241933384133485657453827181925191720412319241Houston North Wayside C405
Houston Monroe C4061221827333838436149403222151721171619492716271Houston Monroe C406
Lang C4082282245424333496161484131202327282121523020292Lang C408
Houston Croquet C4092262438404641557456473628202120201921613525312Houston Croquet C409
Houston Westhollow C410128284537443757725848383119202220NVNANV3726321Houston Westhollow C410
Park Place C4161252132354338476254443627161821191719542617271Park Place C416
Sheldon C5511 N242126273329363840352721202124232222282322251Sheldon C551
Baytown Wetlands Center C5521 N1411132126223645444029131111111010102214791Baytown Wetlands Center C552
Crosby Library C5531 N30213131433050NV56543023202530312728402527291Crosby Library C553
La Porte Sylvan Beach C5561 N181818222723283133322619171717181717212014141La Porte Sylvan Beach C556
Mercer Arboretum C5571 N302931353332404249433834313134343030292827311Mercer Arboretum C557
Tom Bass C5581 N22192430000055453324171822181719513120271Tom Bass C558
Katy Park C5591 N202531283428465651383025161618151316312922261Katy Park C559
Atascocita C5601 N88111117819253324151171013118111496101Atascocita C560
Meyer Park C5611 N242228313024414859433932202328231921142017221Meyer Park C561
Clear Brook High School C5701 N26182234434252705745342517172219191947241861Clear Brook High School C570
Clear Creek High School C5711 N20151829454351595543301813141517161536NV1531Clear Creek High School C571
HRM-3 Haden Road C603/A114 1 N251835354935486058473527212025232122552617291HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N252530334536505658513524192324252321412519341Wallisville Road C617
Danciger C618 1 N232123283839646049403324161516151617204432131Danciger C618
Texas City 34th St. C620 1 N302724405253536366614529222021202020303220351Texas City 34th St. C620
UH Moody Tower C6951 N292341405444567163514129182125221820593021311UH Moody Tower C695
U of H-Sugarland C6961 N30274040494165825950403221192221192150NVNV81U of H-Sugarland C696
UH Coastal Center C6971 N27252236484851646147382518171718181831NV1991UH Coastal Center C697
UH WG Jones Forest C6981 N31303344393656577665514434384137343230NV25251UH WG Jones Forest C698
UH West Liberty C6991 N24232324362846485348301916243031272426211761UH West Liberty C699
Lake Jackson C1016 1272223283942626555453527191818161819233825311Lake Jackson C1016
Baytown Garth C10171272732344835525963563524192225252323422620351Baytown Garth C1017
Galveston 99th St. C1034/A320/X183130282642565654736964493120212019201929NANV371Galveston 99th St. C1034/A320/X183
Oyster Creek C1607 1 N242222354543536656504025191717171617183221311Oyster Creek C1607
AreaMonitoring SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
San Antonio
San Antonio Northwest C232393637414848638057554845352732323331405252552San Antonio Northwest C23
Camp Bullis C58 1NV3743384649648958574947362834353533384952551Camp Bullis C58
Calaveras Lake C59132293045524865685451443729NV2728292631NV61211Calaveras Lake C59
Elm Creek Elementary C5011 N352730434748676656524538332629303230345652561Elm Creek Elementary C501
Fair Oaks Ranch C5021 N353641364347597558574947382735343334364649541Fair Oaks Ranch C502
Bulverde Elementary C5031 N353745334250628761574843382937383832354953591Bulverde Elementary C503
New Braunfels Airport C5041 N292734373946636654484336282426242524254554521New Braunfels Airport C504
City of Garden Ridge C5051 N323038384354648156524640302428323026315357651City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N292730354045626356484436262523242523234249521Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N312929455349707756534638292527292927315162661Heritage Middle School C622
CPS Pecan Valley C6781 N30262737434161674947393327111192723284848541CPS Pecan Valley C678
AreaMonitoring SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
Corpus Christi-Victoria
Corpus Christi West C42272424344649575456494128192017202221174846372Corpus Christi West C4
Corpus Christi Tuloso C211272629344448NV5755474029191917192121214653361Corpus Christi Tuloso C21
Victoria C871NV2831384747615863534131172119202122253735441Victoria C87
Inez C6091 N232727323944605656504032171717181820223430441Inez C609
Holly Road C6601 NNANA27365051595659524425192017182021155045341Holly Road C660
Violet C6641 N202731334753565756483928202018202322224751371Violet C664
Ingleside C6851 N272524304638465360494528212015172019164235311Ingleside C685
AreaMonitoring SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
Lower Rio Grande Valley
Mission C43/AP1431302930354649556447433432241921242323263843441Mission C43/AP143
Brownsville C80/AGP1801271820253651485548423227191817202120163638321Brownsville C80/AGP180
Harlingen Teege C10231292223244551535952463632222220212223193942401Harlingen Teege C1023
AreaMonitoring SitePOCJune 2017POCMonitoring Site
12345678910111213141516171819202122
Laredo
Laredo Vidaurri C44/AFGP144/P2441241926323838565345392726291824NV2725183244571Laredo 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 - 0.054
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.