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Peak Daily One-Hour Ozone Averages for July 2015

The table below lists the peak daily one-hour ozone concentrations measured in July 2015 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 2015POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 23734303128352827353735363847NA48423632394238414443494743582Ft. Worth Northwest C13/AH302
Keller C17236322832273427263235343637484745423635454641434743474138552Keller C17
Frisco C31/C680150423344313431313943484460746258524446586458586562615546661Frisco C31/C680
Midlothian OFW C52/A1371393829302528273532353538444544514637324241NANANANANA3733381Midlothian OFW C52/A137
Denton Airport South C56/A163/X157143373340324131294249465254726461595349606260656863706051821Denton Airport South C56/A163/X157
Arlington Municipal Airport C61131322323212321262629312932384345393029353634394538393533381Arlington Municipal Airport C61
Dallas North No.2 C63/C679144413838283028323334383956635056504038465348525353564741661Dallas North No.2 C63/C679
Rockwall Heath C69142403436263228363736353449493942383430374738474552486049441Rockwall Heath C69
Grapevine Fairway C70/A301/X182142383436273230293538393852574751483836494944475351564743651Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X071134302930253028274037362935414142363138344630353457485749351Kaufman C71/A304/X071
Granbury C73/C681140382930303726313941363341484753494034434941474744493946461Granbury C73/C681
Eagle Mountain Lake C75 134332831263524253538363635424746443631374237394346485149601Eagle Mountain Lake C75
Parker County C76138372933293625293541333440434343403729354140484341454142561Parker County C76
Cleburne Airport C77/C682133362731273427343538353844504849423632424639454942473745401Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 338383131262727303028353543524050433631384543454745514536513Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C402135362428232425322825283137383744393127353839434239463830401Dallas Executive Airport C402
Greenville C1006/A198139362632243229334139363042483742363539353632394342394445321Greenville C1006/A198
Pilot Point C1032149403440333833304349504955726761585451616563677164646453661Pilot Point C1032
Italy C1044/A323139353530242726353131293241413540373025333636464135433531351Italy C1044/A323
Corsicana Airport C1051132303326283028283537373338464241383536353932373563565544531Corsicana Airport C1051
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C644232322537243033372835323337434032283028474329333549574332852Longview C19/A127/C644
Tyler Airport Relocated C82143292638234133343427273741413638333332484432435052434128541Tyler Airport Relocated C82
Karnack C85/AFHP303140382130332424363336425443565145374550585542434943445446411Karnack C85/AFHP303
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X1512837157546053758675576558616555515247474573464853636148NA672El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15917358514254487267604033NA74534748485043446955566161635752571Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 180695547605476777143535068635554544950507454505559645852581Chamizal C41/AH126
Socorro Hueco C49/F312169685345655768615348455263735859655655567153656473685565661Socorro Hueco C49/F312
Skyline Park C72184525444585374796751534966615150484747506552505658655354621Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N35393432384849484541413847424345444038464042464760504340373BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C414173475142595467666047475068675645474843456261655853625262581Ivanhoe C414
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Waco
Waco Mazanec C1037141323631252726313131313444413840363132324338454040443234371Waco Mazanec C1037
Temple Georgia C1045144363930262826323032314149453846373534434440494444353335401Temple Georgia C1045
Killeen Skylark Field C1047135353631273229333036384254524654443636484744454940343344511Killeen Skylark Field C1047
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 218211919202018242327262631243126222525NA1024243038343528462Beaumont-Downtown C2/A112/C2002
West Orange C9/A141219233025222319252428244337284432263052282624324051474729552West Orange C9/A141
Port Arthur West C28/A128/A228121222122242319262631312629263030252424352325282732363423821Port Arthur West C28/A128/A228
Hamshire C64/C654118212124232319292326253035273329262729312624283035343126661Hamshire C64/C654
SETRPC Port Arthur C6281 N22232324232321252732332629272931262426322426282732353722831SETRPC Port Arthur C628
SETRPC 40 Sabine Pass C640/C1654120212022222119242729302525272729252525302127262624292824531SETRPC 40 Sabine Pass C640/C1654
SETRPC Mauriceville 42 C642/C311/C6651 N24322824232521332831303943334541323642463326324942484452461SETRPC Mauriceville 42 C642/C311/C665
SETRPC 43 Jefferson Co Airport C643117181718171816212125242224222524212121292021232227312923671SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 121252424272523292734342934293332272827382626292936393826641Nederland High School C1035
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Austin
Austin Northwest C3/A322234303226252825313031363947394245383133403840414043383836382Austin Northwest C3/A322
Audubon C38132313327272826313131353946394147363134373936394344403739411Audubon C38
Fayette County C6012 N26252420202323252628262924283533293026262627262934272727282Fayette County C601
Dripping Springs School C6141 N38343329273227323133343845374147373133343536383943363342411Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N27262726212522242630252728283434322727302831333439302930321CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N38343731273029343437384351474954443436474543454650424242481CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N33293025232626302929333541353940362930313332373738333232331Gorzycki Middle School C1603
Lockhart C16041 N32272923222623283033323134334038352930303232343434333130351Lockhart C1604
CAPCOG San Marcos Staples Road C16751 N37282823232624304424272529313435322627272930323531312731301CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N32283025232624272830283033313739342828313334363643383132351CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G316222272927232422282436313337374443323242373630335049433739752Houston East C1/G316
Houston Aldine C8/AF108/X150 227323828252825353451434250525958403760525341436759594956772Houston Aldine C8/AF108/X150
Channelview C15/AH115 320223425222219262137313743364338293140393427314543524543783Channelview C15/AH115
Northwest Harris Co. C26/A110/X154230262623232925303244352835355147303140375529303947404842502Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP2391192023212120182321272924283036332528342827242835393432291141Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C45123222422212122272433293830343228242633332316252734333129831Seabrook Friendship Park C45
Houston Bayland Park C53/A146 122211816152118242228222428313432232425312826313731322833781Houston Bayland Park C53/A146
Conroe Relocated C78/A321140485032314237415479574747717871505553644046437558527885531Conroe Relocated C78/A321
Manvel Croix Park C84126322624232424302428282827293332262627252426253132273031421Manvel Croix Park C84
Clinton C403/C304/AH113 318222524222520222124252726293531242732273522243736302829833Clinton C403/C304/AH113
Houston North Wayside C405115202319182118242331272832344037272840333124244242373335621Houston North Wayside C405
Houston Monroe C406120202021192019221922212225263027242325212023242829222527661Houston Monroe C406
Lang C408223293223212625302939343739485346343242523936395047454143742Lang C408
Houston Croquet C409224282321202623292628252628293233252426292727283131263337582Houston Croquet C409
Houston Westhollow C410123282823222723292734292628324539303037332827274244433435661Houston Westhollow C410
Houston Texas Avenue C411118232421202017252029262829313433262428292723233233302927741Houston Texas Avenue C411
Park Place C4161242324232223212724292526302933332427312725242633342832311061Park Place C416
Sheldon C5511 NNA375040393836423957525559546642323547403130355349545351551Sheldon C551
Baytown Wetlands Center C5521 N21212622202421262430263233262725242529252421292931313530811Baytown Wetlands Center C552
Crosby Library C5531 N19274226252523292737314953505349324157463434386151665856631Crosby Library C553
West Houston C5541 N19242018182320252532272425274340262633292524253844353735691West Houston C554
La Porte Sylvan Beach C5561 N262427252125233026383336303432292828313326253435353535361131La Porte Sylvan Beach C556
Mercer Arboretum C5571 N23323624222623293454403643515752403752524634426156535057501Mercer Arboretum C557
Tom Bass C5581 N20211818161615211823212021242624202121191820192325192320491Tom Bass C558
Katy Park C5591 N19211717162017232034252124242926212022232121212637262718351Katy Park C559
Atascocita C5601 N26313223232623303342403339405138333853443533334844544350281Atascocita C560
Meyer Park C5611 N17273019202523272941362429435245313342424727275151414346551Meyer Park C561
Bunker Hill Village C5621 N17222421182421252529242929354236272933372727284134352926691Bunker Hill Village C562
Huffman Wolf Road C5631 N26404220261724312936285050485753344147523728406349487164271Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N20272926232220272330283435334239273041343127314441423539731HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N23253525222721272731283443394537323447353427354648575645851Wallisville Road C617
Danciger C618 1 N232018211719NANANANANA1711999NA83101NA18NANANA132125NANANA211Danciger C618
Mustang Bayou C619 1 N2123242322232126222324222630323125252927252529262321269NA1Mustang Bayou C619
Texas City 34th St. C620 1 N25263130242725322528292725263129262626272325272926302826621Texas City 34th St. C620
UH Moody Tower C6951 N24272724232522302633292922323725NANANA132827273536313230941UH Moody Tower C695
U of H-Sugarland C6961 N22202119172017232432292121243028232425232122222930252220441U of H-Sugarland C696
UH Coastal Center C6971 N19202119171919221920212425242321191927231919222119202020331UH Coastal Center C697
UH WG Jones Forest C6981 N32404227283432384972494043617366454858584343376962566975551UH WG Jones Forest C698
UH West Liberty C6991 N31376033313329363847356470586856504966664744577160667169481UH West Liberty C699
Lynchburg Ferry C1015/A165 122242723222421262231293034333633242937332327323537454935721Lynchburg Ferry C1015/A165
Lake Jackson C1016 124232321NA2020261919231817282424202120181922232121181819211Lake Jackson C1016
Baytown Garth C1017127283826252924313036313844435042373851413832405653636150971Baytown Garth C1017
Galveston 99th St. C1034/A320/X183130263130232623292526272322242927242521232125252625192427261Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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San Antonio
San Antonio Northwest C232NA323027252624323032343336394240382832333435364044524038382San Antonio Northwest C23
Camp Bullis C58139303329252826333235363645524649403137424143404551504642461Camp Bullis C58
Calaveras Lake C59130292822212622282930282627323935312627282929333033353132331Calaveras Lake C59
Elm Creek Elementary C5011 N31272725222523302528282836323636332529302930323233332934321Elm Creek Elementary C501
Fair Oaks Ranch C5021 N36293328242824313034373341474648393136403942384347454542431Fair Oaks Ranch C502
New Braunfels Airport C5041 N33282923222724292728292630293839342929313032353533333135311New Braunfels Airport C504
City of Garden Ridge C5051 N29302822202620273028272936323934302729262831343136303131311City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N31272925222524282727272631283638342828313131343533322932311Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N32293024212622293032292627334237312828273030343236363232341Heritage Middle School C622
CPS Pecan Valley C6781 N28272521182220272728262630313734313526292830313432332931301CPS Pecan Valley C678
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C4237282532302524252324222320222828262224232424252221212323262Corpus Christi West C4
Corpus Christi Tuloso C21136302331262321232222202219212626242023212121252221222223251Corpus Christi Tuloso C21
Victoria C87131242423242420262525252426253230262726242525272532292324341Victoria C87
Inez C6091 N222216NANANANANANANANANANA182424232120192122232122212022221Inez C609
Coleto C6241 N31272625252726292726262828273132292728282828312929282626291Coleto C624
Aransas Pass C6591 NNANANANANANANANANANANANANANANA2120NANANANANANANANANANANANA1Aransas Pass C659
Holly Road C6601 N30202127251818191817141514152120191619171819231816171820221Holly Road C660
Ingleside C6851 N31252729282524242325222422212424232224212224272221232327271Ingleside C685
Odem C6861 N28251924251918201821161817182423201619191920232019191821251Odem C686
Taft C6871 N1912NANANANANANANANANANANANANANANANANANANANANANANANANANANA1Taft C687
Cuero C16021 N24222622222221252426243133313033292627272929293031282123301Cuero C1602
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP143127302437222120244234252321222828252021222424252326232321241Mission C43/AP143
Brownsville C80/AGP180129282232212121213926181916182325261820212221232016181820211Brownsville C80/AGP180
Harlingen Teege C1023128312335212221233231252624223032271821242723262321232425281Harlingen Teege C1023
AreaMonitoring SitePOCJuly 2015POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P244132252929192420252633302324343837322424262729323233273131301Laredo 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.