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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 25835535548637674545846413433394333317074743376472Ft. Worth Northwest C13/AH302
Keller C1725938515042637080606051453634444534335672673789422Keller C17
Frisco C31/C68014837535344646679586654503736505138375453522784481Frisco C31/C680
Midlothian OFW C52/A13715139485458679165556152453431413729305359534851501Midlothian OFW C52/A137
Denton Airport South C56/A163/X15715036515437616687676553494037495045414660603080471Denton Airport South C56/A163/X157
Arlington Municipal Airport C6115231485149608364465343382625373324266562594155501Arlington Municipal Airport C61
Dallas North No.2 C63/C67915237605648636981526453483832404235336360482774431Dallas North No.2 C63/C679
Rockwall Heath C6915434495042626263536155423931283437354160472659411Rockwall Heath C69
Grapevine Fairway C70/A301/X18215736535743617587556351433633414534355556583384451Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X07114833504939576358486155423633284034353753503542491Kaufman C71/A304/X071
Granbury C73/C68115734494848656766615745424731384540323664813752521Granbury C73/C681
Eagle Mountain Lake C75 15438484942656179576050483936424639365377653382451Eagle Mountain Lake C75
Parker County C7615536474444616366565645414530354337324983723676491Parker County C76
Cleburne Airport C77/C68216236525359749771666752473737444835344566684659491Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 34933546048637375455851423027353629296257462967433Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C402151354552495971614457463933273332282960NA483553471Dallas Executive Airport C402
Greenville C1006/A19814129434439646161546247382933294538353349452550391Greenville C1006/A198
Pilot Point C103214636484937616082606554514039545540404049552674431Pilot Point C1032
Italy C1044/A32314736414348567759555950433228303127263045554645471Italy C1044/A323
Corsicana Airport C105114636454745566765516754504133363439353850433948511Corsicana Airport C1051
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C64424435403757496165585950312534262622245442252531472Longview C19/A127/C644
Tyler Airport Relocated C8214442394649596965485846342333262925223645252735531Tyler Airport Relocated C82
Karnack C85/AFHP30313925393638556156566249272325454525344438212139291Karnack C85/AFHP303
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X15126072638380827957605544464281756564587256566466622El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15915479537671676759615041414071776162555946545759581Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 15779618479777463625948495587847270596248586359611Chamizal C41/AH126
Socorro Hueco C49/F31215065486764625360674838414163776160494839545856541Socorro Hueco C49/F312
Skyline Park C7215868496868NANA56565446455174666465606048675764621Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N5554646468615957565754535048505265594840505159563BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C41415174467260646062595041423972766362505446585659581Ivanhoe C414
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Waco
Waco Mazanec C103714138444848596669626249413031343431313749454044471Waco Mazanec C1037
Temple Georgia C104514238405056737869706555503633394134344055584354581Temple Georgia C1045
Killeen Skylark Field C104714838355350746870716050444639515242323954544667531Killeen Skylark Field C1047
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 22728293643335553775137232017212020204825163918252Beaumont-Downtown C2/A112/C2002
West Orange C9/A141224252037382944NANANANA201824242323224222174119252West Orange C9/A141
Port Arthur West C28/A128/A228125272544474255636759482621192118201821NA184317261Port Arthur West C28/A128/A228
Hamshire C64/C65412825234948385667655637302117231921214332193917191Hamshire C64/C654
SETRPC 40 Sabine Pass C640/C165412728234749515760605545282023222323212435234619401SETRPC 40 Sabine Pass C640/C1654
SETRPC 43 Jefferson Co Airport C64312527254146426464685647282222242323205127184119271SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 12527253944405550705340272120222121215125184320281Nederland High School C1035
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Austin
Austin Northwest C3/A32224238414556657276675449423630353531334553574749572Austin Northwest C3/A322
Audubon C3814340343950667077615549453932383835314356584054391Audubon C38
Fayette County C6012 N4145354549486671616047402628302825272743354036402Fayette County C601
Dripping Springs School C6141 N4036424547636570565248443632374236323951575748551Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N3036344546506263665143372826312928262849453737471CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N4343424954686977716351454437444639364258584560561CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N3632384145616466595145413329343131304439454035441Gorzycki Middle School C1603
Lockhart C16041 N3129364353538165675347433227313030314164695146511Lockhart C1604
St. Edwards University C16051 N3729374548587066604844372926303028293648523741501St. Edwards University C1605
CAPCOG San Marcos Staples Road C16751 N3533394946567565645148403129353230283050556044521CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N3640464753637070685145433228363230283354544442521CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G31622826574561394868725444352323292821256225173831352Houston East C1/G316
Houston Aldine C8/AF108/X150 23432625758435869826252462630374027296131284040342Houston Aldine C8/AF108/X150
Channelview C15/AH115 32624444662NANANANANANANANA15312823265426194031343Channelview C15/AH115
Northwest Harris Co. C26/A110/X15424343494849386167896458553134353025353937314046292Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23912520323555475277655237302219252419206629183925361Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4512927304356525363696148NA2323242622213832184321411Seabrook Friendship Park C45
Houston Bayland Park C53/A146 1292958596347628164534234NA24232719228138243629381Houston Bayland Park C53/A146
Conroe Relocated C78/A32113730374541385756847158443746395644403435282758281Conroe Relocated C78/A321
Manvel Croix Park C84132303846535968102675544322423282221256647304529421Manvel Croix Park C84
Clinton C403/C304/AH113 32727534159455572675643341921272320257531243427343Clinton C403/C304/AH113
Houston North Wayside C40512627545051405260665143342122262419235626223430311Houston North Wayside C405
Houston Monroe C40612423384148454779564336261718231817207531203527301Houston Monroe C406
Lang C40823031595151385270705246372325303524236933243433332Lang C408
Houston Croquet C40922827535657495885595139332123222220238439333828392Houston Croquet C409
Houston Westhollow C41013139665252416079635242362122282218NA7339323734341Houston Westhollow C410
Park Place C41612827434554455071624740331819242117217829203326341Park Place C416
Sheldon C5511 N2523313338313840433829282122262623243225232827261Sheldon C551
Baytown Wetlands Center C5521 N16121525352440524543351513141312121130169147111Baytown Wetlands Center C552
Crosby Library C5531 N3623433958335458616237252229423831324929303632431Crosby Library C553
La Porte Sylvan Beach C5561 N2019192530252932343428201918181918182720161615191La Porte Sylvan Beach C556
Mercer Arboretum C5571 N3333343843364344544641383334364031323329293440281Mercer Arboretum C557
Tom Bass C5581 N24233244NANANANA604736281820241918227335243726331Tom Bass C558
Katy Park C5591 N2334383541314967574235301921291817223531263025271Katy Park C559
Atascocita C5601 N101018182910222739281817101218171113211081616131Atascocita C560
Meyer Park C5611 N2727343836274451684947382325352825232223202533211Meyer Park C561
Clear Brook High School C5701 N2922273751495381634937301818242120207139204223351Clear Brook High School C570
Clear Creek High School C5711 N2319203852525466594736231416182119175830173818151Clear Creek High School C571
HRM-3 Haden Road C603/A114 1 N2825503966425169725140352322282622256729193631371HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N2827363954395362615441262128303025235126224028291Wallisville Road C617
Danciger C618 1 N2627283848427177544437271716181618182448404423201Danciger C618
Texas City 34th St. C620 1 N3330254655675569696551332322232223223838224422651Texas City 34th St. C620
UH Moody Tower C6951 N3132615165495978735445332024282520238632253731361UH Moody Tower C695
U of H-Sugarland C6961 N3332474453467295615345382221262421236546364230151U of H-Sugarland C696
UH Coastal Center C6971 N2828244753595672645246301919192021194629214119191UH Coastal Center C697
UH WG Jones Forest C6981 N3735395149395964847161513943504441353935303852181UH WG Jones Forest C698
UH West Liberty C6991 N3026312940325049575238231829394030263326193836NA1UH West Liberty C699
Lake Jackson C1016 13025274144456873585044312120211821202647314222251Lake Jackson C1016
Baytown Garth C101713130394157385564666040282127313025255227224231321Baytown Garth C1017
Galveston 99th St. C1034/A320/X183131312953618359787272563322232320222039NA194921661Galveston 99th St. C1034/A320/X183
Oyster Creek C1607 1 N2724233951495972585545292219201918182043254017231Oyster Creek C1607
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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San Antonio
San Antonio Northwest C2324845424654576483605850503730343838345058546152542San Antonio Northwest C23
Camp Bullis C58 14346504550586694606352523931384140364655556760551Camp Bullis C58
Calaveras Lake C5913434385160537074565346383328303132303653646745461Calaveras Lake C59
Elm Creek Elementary C5011 N4137394853567368635446413630323538324265555948491Elm Creek Elementary C501
Fair Oaks Ranch C5021 N4044484246566185616352524031384139374251516259521Fair Oaks Ranch C502
Bulverde Elementary C5031 N39435342455865102646150454132434842354353567461541Bulverde Elementary C503
New Braunfels Airport C5041 N3330374642556971645146383128292828283051566545481New Braunfels Airport C504
City of Garden Ridge C5051 N3634485146596790655549423528313832303959617845491City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N3330334444516866665046383028272827272746536144481Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N3434375463567284595648403529323333323556667047501Heritage Middle School C622
CPS Pecan Valley C6781 N323033515148657053494136311712529263452546040451CPS Pecan Valley C678
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C422926264351526258635143312322192124231957525528282Corpus Christi West C4
Corpus Christi Tuloso C2113030363850515061645042312221182123232450574126231Corpus Christi Tuloso C21
Victoria C8712733344653496561735645351924232324243240415534361Victoria C87
Inez C6091 N2531294344486458615443361819192020212638335729281Inez C609
Holly Road C6601 NNANA294852546657695548302322191922241761504428261Holly Road C660
Violet C6641 N2232384253566162675241302522202226242854584330261Violet C664
Ingleside C6851 N2827274651445259685347302322171821201853394126201Ingleside C685
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP14313435364551525868534537352821232626243545464934251Mission C43/AP143
Brownsville C80/AGP18012820243648585257504534282119192223221744423826181Brownsville C80/AGP180
Harlingen Teege C102313325293153565963564939382523232323252448464435241Harlingen Teege C1023
AreaMonitoring SitePOCJune 2017POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P24412622333343435860474229283421272629272037476436221Laredo 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.