Skip to content. | Skip to navigation

Personal tools

Navigation

Daily Maximum Eight-Hour Ozone Averages for July 2017

The table below lists the peak daily maximum eight-hour ozone concentrations measured in July 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 SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 2432632NANV5137NV523833333243505160454143433539NA2Ft. Worth Northwest C13/AH302
Keller C1724228444650524048494135343842474763514748483842NA2Keller C17
Frisco C31/C68014633465049565154395543405054424247575354544948NA1Frisco C31/C680
Midlothian OFW C52/A13713228374128513039394434322940475242393539434033NA1Midlothian OFW C52/A137
Denton Airport South C56/A163/X15714830454758494552455143404638424552666055534548NA1Denton Airport South C56/A163/X157
Arlington Municipal Airport C611352742453464263948403130283850544540NV38423534NA1Arlington Municipal Airport C61
Dallas North No.2 C63/C67913330424436634455464936334155424545494649494343NA1Dallas North No.2 C63/C679
Rockwall Heath C69133273842334241453638342933563735404039404333NVNA1Rockwall Heath C69
Grapevine Fairway C70/A301/X18213727444850564758424436343944424554525051494242NA1Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711NANANANANV333336353734312635423441413838463936NA1Kaufman C71/A304/X071
Granbury C73/C68114326373935393539443828292737565349433437393435NA1Granbury C73/C681
Eagle Mountain Lake C75 14727NANV55504650513935333436474968544746453641NA1Eagle Mountain Lake C75
Parker County C7614324424148373740423430282732454661453638393040NA1Parker County C76
Cleburne Airport C77/C68214328364132413439434532333039626149453943464037NA1Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 32826363828523546453930263047424645383638413534NA3Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C402129253639NANV3240403832262642444842353436403533NA1Dallas Executive Airport C402
Greenville C1006/A19813235364235394538363831262945343242423839413340NA1Greenville C1006/A198
Pilot Point C103214433434657504646385846455136404244605551545447NA1Pilot Point C1032
Italy C1044/A3231262529382328353132NV29272632404740383439433928NA1Italy C1044/A323
Corsicana Airport C105112529303829293839384138343439414340423940483935NA1Corsicana Airport C1051
AreaMonitoring SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
Tyler-Longview-Marshall
Longview C19/A127/C644228222935363242403930282326395340474143414134NVNA2Longview C19/A127/C644
Tyler Airport Relocated C82130232838273143403432312533NANANANV443940423437NA1Tyler Airport Relocated C82
Karnack C85/AFHP3031NV263130373136334043364034343834414945NANV4732NA1Karnack C85/AFHP303
AreaMonitoring SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
El Paso-Juarez
El Paso UTEP C12/A125/X151251636460686843505171NANV5633324451564748585654NA2El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15914463616259623842466160615032304044544343595547NA1Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 147676762656438485071646853NVNANANV564143575348NA1Chamizal C41/AH126
Socorro Hueco C49/F31213752615647553237404853624226212635423635404239NA1Socorro Hueco C49/F312
Skyline Park C7214866605958644143476367664832344252514850686148NA1Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N383241434336343532353129373234424948353637NVNVNA3BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C414141605956525834384253NV553827243137423737444637NA1Ivanhoe C414
AreaMonitoring SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
Waco
Waco Mazanec C103713029283329324134374230283041364246333239393835NA1Waco Mazanec C1037
Temple Georgia C104513734332833363935374532323542395356343743424236NA1Temple Georgia C1045
Killeen Skylark Field C104714034403132324038364534374141374953353940424335NA1Killeen Skylark Field C1047
AreaMonitoring SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 21717191817262229373524163129NV5840344637352419NA2Beaumont-Downtown C2/A112/C2002
West Orange C9/A14122025232022253135333726182728274634424339413819NA2West Orange C9/A141
Port Arthur West C28/A128/A228115192018182319303735231721323057333033403527NVNA1Port Arthur West C28/A128/A228
Hamshire C64/C654117162020NV242639373223191929315036323033322521NA1Hamshire C64/C654
SETRPC 40 Sabine Pass C640/C165411721211919252026373722172430334937352730333220NA1SETRPC 40 Sabine Pass C640/C1654
SETRPC 43 Jefferson Co Airport C6431172021201925233437352520303331543427NV36NANANANA1SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 11818191919272331393825193234295741364444372620NA1Nederland High School C1035
AreaMonitoring SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
Austin
Austin Northwest C3/A32222531292533373838353628283247405058323638333538NA2Austin Northwest C3/A322
Audubon C3812730302833374134343528303346334854353738363929NA1Audubon C38
Fayette County C6012 N1923231923272730312422243130364949263027272225NA2Fayette County C601
Dripping Springs School C6141 N2630292731313539333526283240384953333437333533NA1Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N2025242122222532282621222430334147232826262526NA1CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N3334363039384140384234354148395053364243454435NA1CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N2024232226252932272821222634334248272726252929NA1Gorzycki Middle School C1603
Lockhart C16041 N2227252427283035312823242834445249303229232627NA1Lockhart C1604
St. Edwards University C16051 N2126232325262831282621212436404652262928252931NA1St. Edwards University C1605
CAPCOG San Marcos Staples Road C16751 N2127242426272836302823242732385051282928252830NA1CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N2429282530303237333425253041364450303236313138NA1CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
Houston-Galveston-Brazoria
Houston East C1/G31622123262223373639352720203452325239383356332020NA2Houston East C1/G316
Houston Aldine C8/AF108/X150 227323527365050NVNANV29234053354653513851453027NA2Houston Aldine C8/AF108/X150
Channelview C15/AH115 32023252023303740363020223340354530354753322222NA3Channelview C15/AH115
Northwest Harris Co. C26/A110/X154226283026365433NVNANANV264042334455454142362626NA2Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP23911718191719302732293719172848265536253255251818NA1Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4511821211820312833274222202959325344273557302121NA1Seabrook Friendship Park C45
Houston Bayland Park C53/A146 11922231724343030313721213150346042273236251921NA1Houston Bayland Park C53/A146
Conroe Relocated C78/A32113640393739374434383036NVNV31353542485037483531NA1Conroe Relocated C78/A321
Manvel Croix Park C8412221211819262729293719202645395346232630221822NA1Manvel Croix Park C84
Clinton C403/C304/AH113 32123222121322935343621182954315340302950271921NA3Clinton C403/C304/AH113
Houston North Wayside C4051NANANV1820353234322218192846NANANV372344311817NA1Houston North Wayside C405
Houston Monroe C40611617181617242226273115152042254833202231191417NA1Houston Monroe C406
Lang C40822023262029393230302826212848304744323142302121NA2Lang C408
Houston Croquet C40921920201621292729303719212843345538252932211821NA2Houston Croquet C409
Houston Westhollow C41011923232225352927313922223245355742253532272019NA1Houston Westhollow C410
Park Place C4161161919NANV282629303518172751315338282945241618NA1Park Place C416
Sheldon C5511 N2121222022242727262020202226232726272830272221NA1Sheldon C551
Baytown Wetlands Center C5521 N8101091115172317231191322162621122331457NA1Baytown Wetlands Center C552
Crosby Library C5531 N2433342935354541402631193235313840335344502724NA1Crosby Library C553
La Porte Sylvan Beach C5561 N1617171717212122202618172126222625202231131313NA1La Porte Sylvan Beach C556
Mercer Arboretum C5571 N2222222223242223232223233034283238393732362929NA1Mercer Arboretum C557
Tom Bass C5581 N1719191719252425273419172244314841242430201618NA1Tom Bass C558
Katy Park C5591 N1516171518272017243316152327253822182322181716NA1Katy Park C559
Atascocita C5601 N10121491116252118898151311131417221820129NA1Atascocita C560
Meyer Park C5611 N1922232028402922271920182632203040142430281613NA1Meyer Park C561
Clear Brook High School C5701 N1717191818272528283321172344305439NVNANANANANANA1Clear Brook High School C570
Clear Creek High School C5711 NNANANV16NVNV2229243117142251295138NVNANANANANANA1Clear Creek High School C571
HRM-3 Haden Road C603/A114 1 N2123252224363440343120213153335337334255322022NA1HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N2123262324293741383225212933354537264850392421NA1Wallisville Road C617
Danciger C618 1 N1412151213181419191813111619263334171817161420NA1Danciger C618
Texas City 34th St. C620 1 N1920201719292428294017182643385645232933252222NA1Texas City 34th St. C620
UH Moody Tower C6951 N2022231924353134343821202958375845323453281921NA1UH Moody Tower C695
U of H-Sugarland C6961 N172221182329NV30314123212439355744NV3130NVNANANA1U of H-Sugarland C696
UH Coastal Center C6971 N1717191517242125253615152341314941NVNANANVNVNANA1UH Coastal Center C697
UH WG Jones Forest C6981 N323937354347453339NV36384638353947NVNV39NVNANANA1UH WG Jones Forest C698
UH West Liberty C6991 N2426322831NV43353332252127262732352646NANANANANA1UH West Liberty C699
Lake Jackson C1016 11617181515252117191815141825283437181813141318NA1Lake Jackson C1016
Baytown Garth C10171212326212327NV44393226212833354739275052402620NA1Baytown Garth C1017
Galveston 99th St. C1034/A320/X18312121221923282425414219202541415648323023212623NA1Galveston 99th St. C1034/A320/X183
Oyster Creek C1607 1 N1615151315232117212016151724323742202118181517NA1Oyster Creek C1607
AreaMonitoring SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
San Antonio
San Antonio Northwest C2322929292933383938333126203041485358333034293337NA2San Antonio Northwest C23
Camp Bullis C58 12832313137364041363429263442455253343540353839NA1Camp Bullis C58
Calaveras Lake C5912326NV24NV27NV33312822262431355551272727232631NA1Calaveras Lake C59
Elm Creek Elementary C5011 N2428262727302935302923202432405755292930252934NA1Elm Creek Elementary C501
Fair Oaks Ranch C5021 N3134343341394339353633263845445556383943394337NA1Fair Oaks Ranch C502
Bulverde Elementary C5031 N2733343136363844383831263543385356343542344038NA1Bulverde Elementary C503
New Braunfels Airport C5041 N2126232325252633282722252530354952252626232529NA1New Braunfels Airport C504
City of Garden Ridge C5051 N2125242325262940343021232533415354272729242634NA1City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N2026222224252531282622232429355050252626232427NA1Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N2021212123262530282318222227334947242424212229NA1Heritage Middle School C622
CPS Pecan Valley C6781 N2025222323262733282420202128395149242426222630NA1CPS Pecan Valley C678
AreaMonitoring SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
Corpus Christi-Victoria
Corpus Christi West C421921181916191924211715141717264226172118NV1721NA2Corpus Christi West C4
Corpus Christi Tuloso C21120232021212221NANANV16181720NANANANV222017NANANA1Corpus Christi Tuloso C21
Victoria C8711922211920222327272018182329344746182327202024NA1Victoria C87
Inez C6091 N1819201818232027252018182127304544202224202224NA1Inez C609
Holly Road C6601 N2021191817191722191413151716294529172016131719NA1Holly Road C660
Violet C6641 N2021192017212023241716201918264427182219172023NA1Violet C664
Ingleside C6851 N1920191615191818181614151514274631181815131920NA1Ingleside C685
AreaMonitoring SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
Lower Rio Grande Valley
Mission C43/AP14311920212018232422252522221824282523221918182322NA1Mission C43/AP143
Brownsville C80/AGP1801171714171519NV17191615151316152114171513121819NA1Brownsville C80/AGP180
Harlingen Teege C102312122172220232221252121171823221919212017192221NA1Harlingen Teege C1023
AreaMonitoring SitePOCJuly 2017POCMonitoring Site
123456789101112131415161718192021222324
Laredo
Laredo Vidaurri C44/AFGP144/P24412120212421201923242225181619212732242119212423NA1Laredo 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.