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Peak Daily One-Hour Ozone Averages for July 2014

The table below lists the peak daily one-hour ozone concentrations measured in July 2014 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 SitePOCJuly 2014POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 24073596032NA3838624433454344616832395759559710596674547584153522Ft. Worth Northwest C13/AH302
Keller C172416651625051414565463543494255682835516058858478704750513553412Keller C17
Frisco C31/C6801545550645856586482534957665958764235427266646166915760506158411Frisco C31/C680
Midlothian OFW C52/A1371355655514643464345383638483956583142494656547370604640694149471Midlothian OFW C52/A137
Denton Airport South C56/A163/X1571535847745857466084514448614455903534487585796869835749494568401Denton Airport South C56/A163/X157
Arlington Municipal Airport C611365862534541403941363336393657582735505148679578584240574051461Arlington Municipal Airport C61
Dallas North No.2 C63/C6791465450565253444974433545526055723337426460676464804949525856391Dallas North No.2 C63/C679
Rockwall Heath C691375048564945434264403944546151604234425950586264704443487552411Rockwall Heath C69
Grapevine Fairway C70/A301/X1821446252685450485379433944595055733238506969838072774956524264401Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711445146474943353542383851474755593433395653566659684443524851521Kaufman C71/A304/X071
Granbury C73/C681140556253524036353646343840377558374359475068113101624242625350441Granbury C73/C681
Eagle Mountain Lake C75 1355944574742413554382841393653722833515556806769594145474850331Eagle Mountain Lake C75
Parker County C761334149444636373341413039393460603433644649896973614141534742321Parker County C76
Cleburne Airport C77/C6821415864545240484349503240433773613643535050618583594641735053511Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 3415554565248454168423142464957673040456052687169724845565060373Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C4021345458505141444138363038443954592836455146628165674439624457371Dallas Executive Airport C402
Greenville C1006/A1981444946524645374146363543516450533631364948564770654841465642241Greenville C1006/A198
Pilot Point C10321595349626061586382645059704356733037397273696558966349475945391Pilot Point C1032
Italy C1044/A3231344151554838463842333042464154594039404546525760594237643948501Italy C1044/A323
Corsicana Airport C10511353553475243373637394261584652583231375058514762633842514764501Corsicana Airport C1051
AreaMonitoring SitePOCJuly 2014POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C6442224747537451302752293456444648792726355372678767573124586457282Longview C19/A127/C644
Tyler Airport Relocated C82128375367444941414236353339NA51533234385557675861593642496042361Tyler Airport Relocated C82
Karnack C85/AFHP3031404042385170475261606048466946553030333138453836767151464849321Karnack C85/AFHP303
AreaMonitoring SitePOCJuly 2014POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X15124452504658466760556045494854875452605251571005157797473587162742El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X1591404643364439559146453940414673485068474966734552636660547062631Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 1454543415143605348534043435181555368545362814953727269587162691Chamizal C41/AH126
Socorro Hueco C49/F3121454746414739525349454042404766616663575776665053556356537372591Socorro Hueco C49/F312
Skyline Park C72146524544554361575451414241517055558052NA61744761697162567859691Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N453936333845383637423740363940475446NA5550515156545252454551543BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C4141434742404739444037383334324365495766484867623950565559496156561Ivanhoe C414
Cd Juarez Delphi C6631 N333535313733443936382931324066454451414456574241NANANANANANANA1Cd Juarez Delphi C663
AreaMonitoring SitePOCJuly 2014POCMonitoring Site
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Waco
Waco Mazanec C1037135374763523648424736323245515561344347494858546659NANANANA59451Waco Mazanec C1037
Temple Georgia C10451365149495939484850393134445446543445554743507065624341496449471Temple Georgia C1045
Killeen Skylark Field C10471484149485642535052493534425943553939504946547064704850605953461Killeen Skylark Field C1047
AreaMonitoring SitePOCJuly 2014POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2245541758058342227374172574736713526474944464765632926497469542Beaumont-Downtown C2/A112/C2002
West Orange C9/A1412325044706359422741303156595630702728384236464140783027406464512West Orange C9/A141
Port Arthur West C28/A128/A2281233946626655322324362557483434493425605729387068592425557660511Port Arthur West C28/A128/A228
Hamshire C64/C654124363574NANANA2227302239484739573226414332337862752726616057371Hamshire C64/C654
SETRPC Port Arthur C6281 N224446535852362021282454523331423425515236356367552321457051411SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C1654120275848645635192228NANA343948504028693925415172582428407457521SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N465150436974452648374860575829612930284134474342503426345260541SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C643125454969696134242635316255NA36543527605833426568592825536959541SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 1265156837568432831423467614137603626615037406262612925498063551Nederland High School C1035
AreaMonitoring SitePOCJuly 2014POCMonitoring Site
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Austin
Austin Northwest C3/A3222334551395335373635402931395858483234524641455876503935476436422Austin Northwest C3/A322
Audubon C381375653415437373940423233396143533229504947535861543738586742431Audubon C38
Fayette County C6012 N333043465536323138433334414842422938494633406968483232544741382Fayette County C601
Dripping Springs School C6141 N373743395037353839423035405840483532565048486678503937455042461Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N262338324229262930362326353935372730393733325251463331324132411CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N414746475643444243453433426753623536495239545855634242504948431CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N384450435537383738453235435961483534564845486872453535465138421Gorzycki Middle School C1603
Lockhart C16041 N292730364830292932392527364141362635494838376054443631404536511Lockhart C1604
CAPCOG San Marcos Staples Road C16751 N313032344731323132382628344144362926494539337256373130304231431CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N192527232821192122251818202926251724272521243638312222302622261CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCJuly 2014POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G316245778458666334244241358464595481NA36505250767390673029705162392Houston East C1/G316
Houston Aldine C8/AF108/X150 2577050466763523044474980716950931940394268636684763536NA4175482Houston Aldine C8/AF108/X150
Channelview C15/AH115 3427765525361422141473160866247893637384153656584722928604455403Channelview C15/AH115
Northwest Harris Co. C26/A110/X1542324339355043302436353645394032521624333128354861552828294578402Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP2391275356525049292634322851403850603227516434506183482322664549421Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C451204246545332312227332750463758663325384134446479472626474251501Seabrook Friendship Park C45
Houston Bayland Park C53/A146 1NA5788685341292523312645455054541835637837567856512426403859421Houston Bayland Park C53/A146
Conroe Relocated C78/A3211593135396370613773577664596157684430343563535855734344394386451Conroe Relocated C78/A321
Manvel Croix Park C841262773595340242230352539384255432030604727435857392121444652301Manvel Croix Park C84
Clinton C403/C304/AH113 3327473615650261627272269454045573026525033656978442223574653383Clinton C403/C304/AH113
Houston North Wayside C40514472615467614322423937776961NA712534323748676380652829474563NA1Houston North Wayside C405
Houston Monroe C4061244035494741261932302050373739482728526325456375412019453852391Houston Monroe C406
Lang C4082417880517246432941413572555355643338536045586876653134394263462Lang C408
Houston Croquet C4092274880775341282325332441424650502034707130576257492223393657372Houston Croquet C409
Houston Westhollow C4101325070645643312436313142484851482232627429536556512422373956361Houston Westhollow C410
Houston Texas Avenue C4111336791585444312233322667445052622831455430699NA532424504255391Houston Texas Avenue C411
Park Place C4161NA1585NANANA322537342459444646633332647632617179522423544857431Park Place C416
Sheldon C5511 N5571545361NANA935NANANANANANANANANANANA47464665562427422942301Sheldon C551
Baytown Wetlands Center C5521 N246349514953352234352545544343564123334036695559562327633646451Baytown Wetlands Center C552
Crosby Library C5531 N536238455160533362523658755942672840283364525066783840553257541Crosby Library C553
West Houston C5541 N344858475436221831262638413642381624415024386745401920253052301West Houston C554
La Porte Sylvan Beach C5561 N255159535759372633353349514054744126374340686681512928704657551La Porte Sylvan Beach C556
Mercer Arboretum C5571 N555450405760553854485982666248842130303567515076833541353975451Mercer Arboretum C557
Tom Bass C5581 N203171514335221930292242353446422327555925385855371918413149341Tom Bass C558
Katy Park C5591 N254153535641272227324137394439422129454631475748422323323658291Katy Park C559
Atascocita C5601 N537242425268543352515261735946642032273260505082803838473659451Atascocita C560
Meyer Park C5611 N536453386246503153454679505048752844393963475869692928324678401Meyer Park C561
Bunker Hill Village C5621 N296273575137382631312642474851492031526036507057592427403555391Bunker Hill Village C562
Huffman Wolf Road C5631 N4957354051575121NANANANANANANANANANANANANA3941NANANANANANANANA1Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N407977606161392444493574655652812831474943667088692928751158411HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N427165595667493159553267956850774432444767706769953239683857481Wallisville Road C617
Danciger C618 1 N183634615330231820342132333333351824442419334636331818264932161Danciger C618
Mustang Bayou C619 1 N222956595343282022332633374343402026534824315967362223275152471Mustang Bayou C619
Texas City 34th St. C620 1 N203458626050262120282650453559552931504725386592422521284956541Texas City 34th St. C620
UH Moody Tower C6951 N3573103796349342940382979485555693638277343698690642826595367461UH Moody Tower C695
U of H-Sugarland C6961 N223458794841251927272930364050411926454422424649372119304243271U of H-Sugarland C696
UH Coastal Center C6971 N182761605045252021322254353049452325364522285596372121265358511UH Coastal Center C697
UH WG Jones Forest C6981 N623846385764623669557479545853903532244069445762863540284795461UH WG Jones Forest C698
UH West Liberty C6991 N637440486368644476494042747943722640213471474952854752443957601UH West Liberty C699
Lynchburg Ferry C1015/A165 1278064504457382437352855614942713525344945785465662422633650451Lynchburg Ferry C1015/A165
Lake Jackson C1016 1182131605334211619302230362631331726513618193943241817212627181Lake Jackson C1016
Baytown Garth C10171426961575462432956513064866448774030394464656462863136633654461Baytown Garth C1017
Galveston 99th St. C1034/A320/X1831202184696060342422302953403246643129644521285680522121225366601Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCJuly 2014POCMonitoring Site
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San Antonio
San Antonio Northwest C232353948555937363536443132355352463736715156527964523936525040492San Antonio Northwest C23
Camp Bullis C581404755526641414042483442406340484532715652567669624541596048451Camp Bullis C58
Calaveras Lake C591333342495631303135392729344247363036644538374958423432374133651Calaveras Lake C59
Elm Creek Elementary C5011 N323532455032313333393131334449373538574438377469483834404036551Elm Creek Elementary C501
Fair Oaks Ranch C5021 N384648486238373939443239385634504733645449556658614441515747291Fair Oaks Ranch C502
Bulverde Elementary C5031 N374641425237403740402833415542414524574743456057594241605546371Bulverde Elementary C503
New Braunfels Airport C5041 N333336364931313434392734364443363034544240357159463633354938621New Braunfels Airport C504
City of Garden Ridge C5051 N292631354127282830322225304139302624463532306554382927413931411City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N323742395233333435402837384443373134574541375563473835395039411Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N413756546735333640473133384953393236614641385563453735384435691Heritage Middle School C622
CPS Pecan Valley C6781 N293241485232292932382630334760353334554438367259463733444335671CPS Pecan Valley C678
AreaMonitoring SitePOCJuly 2014POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C4222192747432416191832221618182219193238242015NA14202220242219192Corpus Christi West C4
Corpus Christi Tuloso C211242936464325182120302220242423212129442822213446432221232421201Corpus Christi Tuloso C21
Victoria C871232535395624222021311820353833272146513225384146322021323823251Victoria C87
Inez C6091 N192132364122191818331822242328291934462521233639251920242921191Inez C609
Coleto C6241 N141522333816121413211911151922151429301714282327191512172014141Coleto C624
Aransas Pass C6591 N242031515026152117342121181617172032372122161829181819181616141Aransas Pass C659
Holly Road C6601 N25272833NANANANANA281513141216151728362218151623441717181514141Holly Road C660
Violet C6641 N222630404123171817281916181924191927442921232637462119222017171Violet C664
Ingleside C6851 N262332484927172118322020181820212134392522192132282020212118181Ingleside C685
Odem C6861 N273240474325202222302121252426272129433223203336432320262621221Odem C686
Taft C6871 N262535484628192121372223222027242436483026233538472424262922231Taft C687
Cuero C16021 N253333425232202728372631374441312646453632395350403330394533331Cuero C1602
AreaMonitoring SitePOCJuly 2014POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP1431283429313421212124281923232329222048332419202734NANANA222826211Mission C43/AP143
Brownsville C80/AGP1801293526373123172228281914151622171927211925191819232323232019191Brownsville C80/AGP180
Harlingen Teege C10231263626373225242531302318232827242337352831253126222625313424231Harlingen Teege C1023
AreaMonitoring SitePOCJuly 2014POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P2441293128303327282428282323213237343245384230293641343327333339321Laredo 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 - 0.059
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.