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Daily Maximum Eight-Hour Ozone Averages for July 2015

The table below lists the peak daily maximum eight-hour ozone concentrations measured in July 2015 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 SitePOCJuly 2015POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 23332272926312324303331323443NANV3833303540373941404442NA2Ft. Worth Northwest C13/AH302
Keller C172313026282530242429323232354242423833313841374042404339NA2Keller C17
Frisco C31/C6801413927392831262833353940536150514741394956495356535349NA1Frisco C31/C680
Midlothian OFW C52/A1371313426272426243028303031373739423532263136NANANANANANVNA1Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571393530363036272536424145485758575446425446525657566257NA1Denton Airport South C56/A163/X157
Arlington Municipal Airport C611252719201821192223242626273235352925232730283334323632NA1Arlington Municipal Airport C61
Dallas North No.2 C63/C6791383832342628252430293436455344474138344146444847475044NA1Dallas North No.2 C63/C679
Rockwall Heath C691393830332528252932313131434436393532283441344341464545NA1Rockwall Heath C69
Grapevine Fairway C70/A301/X1821373631332530272630343536434944454236334345404548465145NA1Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711312825262428252530303028323634363128302935273233534343NA1Kaufman C71/A304/X071
Granbury C73/C68113232232826322326303329313538NV423832273337374141364234NA1Granbury C73/C681
Eagle Mountain Lake C75 1322926282429212229343032334043413832283436343740414443NA1Eagle Mountain Lake C75
Parker County C761353328302633212529332832333940393632263237353740394337NA1Parker County C76
Cleburne Airport C77/C68212932242625302528313231313538384035332530343337NV364035NA1Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3NVNV25282526242328253233394337413633283339374340424639NA3Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C4021303223262223232625222527323333373027222634313734353933NA1Dallas Executive Airport C402
Greenville C1006/A1981363420302328262830313128374132373230293133293740393639NA1Greenville C1006/A198
Pilot Point C10321423729363035282637424543505759565347425457525859565654NA1Pilot Point C1032
Italy C1044/A3231323226272225242927262730353632363227232931304033333732NA1Italy C1044/A323
Corsicana Airport C10511302827252428252630302828343636363229272831293331494343NA1Corsicana Airport C1051
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644231262031202628332529273033NV34292628264138263132445040NA2Longview C19/A127/C644
Tyler Airport Relocated C82134272333213528272825253036393331272825393127NV40453836NA1Tyler Airport Relocated C82
Karnack C85/AFHP3031363318262521223028323239364542372934394148323745394047NA1Karnack C85/AFHP303
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X1512696654505851616959495055566152484945464457434547575745NA2El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X159163534740514556564937NVNANV5142434544404254444749545547NA1Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 1665952455852616255394147576051515047484658454749555851NA1Chamizal C41/AH126
Socorro Hueco C49/F3121625850426152535649444249586652555753525255525558656353NA1Socorro Hueco C49/F312
Skyline Park C721764951435651546757474546575949484744454550484852525849NA1Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N3335303134454744403737363939404241383644NV384141534341NA3BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C414165454941575253595242414861625143444341NV495151524954NVNA1Ivanhoe C414
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Waco
Waco Mazanec C10371343030282326242828282729383634373328262935333936363829NA1Waco Mazanec C1037
Temple Georgia C10451353233282527242928292935423535413431303335374440393229NA1Temple Georgia C1045
Killeen Skylark Field C10471NV33302625292730NV303134404041453931303736373942362929NA1Killeen Skylark Field C1047
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 217191718191817222026242426232724202123NANV192225292728NA2Beaumont-Downtown C2/A112/C2002
West Orange C9/A1412172021201920172222262129282432NV222538NV21212628413837NA2West Orange C9/A141
Port Arthur West C28/A128/A22811921192021221723242827242625272724222328NV222525273028NA1Port Arthur West C28/A128/A228
Hamshire C64/C6541161919212121182422242227282630262223272822222527292828NA1Hamshire C64/C654
SETRPC Port Arthur C6281 N202220222122192324302924262527272423242822232625273128NA1SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C165411820202020201721232626222324252523232226202224232225NVNA1SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N212722202023202825242629343037342630373629242940343437NA1SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C6431151715161617151920232119222023221919202318182121232624NA1SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 1192321222223212626332827302730292626262923232727313232NA1Nederland High School C1035
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Austin
Austin Northwest C3/A3222272830252326222828302934393439423630313535353837403434NA2Austin Northwest C3/A322
Audubon C381292929252327242928303134403539423529303436333638393634NA1Audubon C38
Fayette County C6012 N232321181921212122252326222330302725232324252426302424NA2Fayette County C601
Dripping Springs School C6141 N333231282629252927303135403438413529313233343536373331NA1Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N232424222023182223252324242531312824242425272931332525NA1CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N323233282528263132343537414145474032324040374142433538NA1CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N292727232225232727282830353236373327282931313435353030NA1Gorzycki Middle School C1603
Lockhart C16041 N282626212124212627292726282835343025262828293131302727NA1Lockhart C1604
CAPCOG San Marcos Staples Road C16751 N3125252121242226NVNV2423262731312824252526272931282624NA1CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N282727232124222525262628302833363126262830313434362827NA1CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G3162132423222122192623302830333338332726333226262936343331NA2Houston East C1/G316
Houston Aldine C8/AF108/X150 2192729232325243030383636424449423233434339313747484439NA2Houston Aldine C8/AF108/X150
Channelview C15/AH115 3142022202020172420292829333234292424332825222832353830NA3Channelview C15/AH115
Northwest Harris Co. C26/A110/X1542242424202026232729373026283139372727283232272835362937NA2Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP2391141719181919172220242621242531272324242321212627262524NA1Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C451161919191920192422262722232427252223242220NVNV23262422NA1Seabrook Friendship Park C45
Houston Bayland Park C53/A146 1161916141419172119232121232530292121222523222629292425NA1Houston Bayland Park C53/A146
Conroe Relocated C78/A3211294134262937333847614734394863564242394836394054464059NA1Conroe Relocated C78/A321
Manvel Croix Park C84118262321212221252224252322NV31282423232322232428282224NA1Manvel Croix Park C84
Clinton C403/C304/AH113 3122021202020172019212225222629262125262323202228282524NA3Clinton C403/C304/AH113
Houston North Wayside C405191719161718172120252426293032282223302621202230323126NA1Houston North Wayside C405
Houston Monroe C4061131818181818172018202020202327252121192019202225231921NA1Houston Monroe C406
Lang C4082162425212024222625333131343640372928333930313438373334NA2Lang C408
Houston Croquet C4092172621191823222622242323252629302222232524232427292426NA2Houston Croquet C409
Houston Westhollow C4101212223212123212523292624252935312527282825252532322828NA1Houston Westhollow C410
Houston Texas Avenue C4111131820181818152118242424252730272122242422212128292524NA1Houston Texas Avenue C411
Park Place C4161152121202021192421252424242730292224252421222329282327NA1Park Place C416
Sheldon C5511 NNANV38373636344037484547524856362826363224213136373833NA1Sheldon C551
Baytown Wetlands Center C5521 N172021191822192323252524262224221920242118182222262424NA1Baytown Wetlands Center C552
Crosby Library C5531 N152325202122212725332834373541362629413425223341404038NA1Crosby Library C553
West Houston C5541 N1719NV161721152221272321232432302223242523222429302630NA1West Houston C554
La Porte Sylvan Beach C5561 N202222232023212624303024272830262525282423232927312726NA1La Porte Sylvan Beach C556
Mercer Arboretum C5571 N152726202023212329383327374048402930354131273646413839NA1Mercer Arboretum C557
Tom Bass C5581 N131616151515141815201917162024211718181716181721201517NA1Tom Bass C558
Katy Park C5591 N191824231519141917262120202125231918182119202024252222NA1Katy Park C559
Atascocita C5601 N192625192123212727333028333336302528383629252933333531NA1Atascocita C560
Meyer Park C5611 N152222171923212525353022263338362728293330242537342934NA1Meyer Park C561
Bunker Hill Village C5621 N132019181721192222252325252832302425262823222532292525NA1Bunker Hill Village C562
Huffman Wolf Road C5631 N1926261820NV202725302535393444382929373628223442413542NA1Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N132223222120182420252528313036292325313024242832333428NA1HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N182225212023192424282629323036302427372823212834404235NA1Wallisville Road C617
Danciger C618 1 N161817161618NANANANANANV32NVNA3339NANVNANANANV19NVNANANA1Danciger C618
Mustang Bayou C619 1 N182021202021202220202220232526242222222122212523221920NA1Mustang Bayou C619
Texas City 34th St. C620 1 N2325282323252328232526231725282723242423212325252424NVNA1Texas City 34th St. C620
UH Moody Tower C6951 N182323212122202523282626NVNV33NVNANANANV25252532302627NA1UH Moody Tower C695
U of H-Sugarland C6961 N181718171618162120272719182226232021202020202023242018NA1U of H-Sugarland C696
UH Coastal Center C6971 N161718161618162017181919182121191717181717171918181717NA1UH Coastal Center C697
UH WG Jones Forest C6981 N253431232632293541554330374656503837384335353649453950NA1UH WG Jones Forest C698
UH West Liberty C6991 N2731373028302733343932455145NVNV3940474938334754NV4451NA1UH West Liberty C699
Lynchburg Ferry C1015/A165 115212120202219242027262327283027NV222925NV232927303329NA1Lynchburg Ferry C1015/A165
Lake Jackson C1016 1192018NVNANV19NVNV182117162223221920181617192119201716NA1Lake Jackson C1016
Baytown Garth C10171212528242226222828312933353339342730413226253341464841NA1Baytown Garth C1017
Galveston 99th St. C1034/A320/X1831262229242224212523222520202425242122201919212423221819NA1Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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San Antonio
San Antonio Northwest C232NANV28242225222826283028323637373427303031323437394235NA2San Antonio Northwest C23
Camp Bullis C581322930262327232930313331384343423730333837373740444039NA1Camp Bullis C58
Calaveras Lake C591272523202023202625262323242832312923252526273029293027NA1Calaveras Lake C59
Elm Creek Elementary C5011 N2925252221242126242625252627323230242625262830303030NVNA1Elm Creek Elementary C501
Fair Oaks Ranch C5021 N302729252226222829313228343840413629323635343538413839NA1Fair Oaks Ranch C502
New Braunfels Airport C5041 N292626222125232526262624262534333025262726283031303028NA1New Braunfels Airport C504
City of Garden Ridge C5051 N272524201923192425252427292732302923262425283029302528NA1City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N2725252220232225242525242622313228252626262730302928NVNA1Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N282525201924192526262423252834332824262526273029303129NA1Heritage Middle School C622
CPS Pecan Valley C6781 N252322191721182322242223262731322923242626272929292926NA1CPS Pecan Valley C678
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C4231242230232322232122202119212627242022NV23NV2020192021NA2Corpus Christi West C4
Corpus Christi Tuloso C2113024212719212021192118201819NV23221821NVNV202220192120NA1Corpus Christi Tuloso C21
Victoria C871222221212022192323NV22222323292821222322232325232625NVNA1Victoria C87
Inez C6091 N1818141212116434543NVNANANANANANANANANANANANANANA1Inez C609
Coleto C6241 N272525242426242826242326262630302725262526272927272724NA1Coleto C624
Aransas Pass C6591 NNANANANANANANANANANANANANANANANVNVNANANANANANANANANANANA1Aransas Pass C659
Holly Road C6601 N261717251717171716161314121419191714161617181917151617NA1Holly Road C660
Ingleside C6851 N282223272224222322232122202123222120222021222421202222NA1Ingleside C685
Odem C6861 N231917231817171817181516151722211915171718182018171717NA1Odem C686
Cuero C16021 N212122201921192322232225262428282422232224242525262520NA1Cuero C1602
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP1431262822282019192233222320192127252418202122232321222121NA1Mission C43/AP143
Brownsville C80/AGP1801242419301918202026171718151621222217171919202017151717NA1Brownsville C80/AGP180
Harlingen Teege C10231262622292121192222232323191928272416192222222421192122NA1Harlingen Teege C1023
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P2441272326231823192325272418223036333022222425272929302528NA1Laredo 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.