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Peak Daily One-Hour Ozone Averages for September 2016

The table below lists the peak daily one-hour ozone concentrations measured in September 2016 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 SitePOCSeptember 2016POCMonitoring Site
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Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 25663685634313243384174525050626557585271706242272Ft. Worth Northwest C13/AH302
Keller C1724654645033303241363563485447695952535682735941252Keller C17
Frisco C31/C68014843525540383749444055605444568854627068737446331Frisco C31/C680
Midlothian OFW C52/A13716658475134313343334956484145454665484148595539281Midlothian OFW C52/A137
Denton Airport South C56/A163/X15714847646138383720413956677147865353596186948152311Denton Airport South C56/A163/X157
Arlington Municipal Airport C6115565534830313040314373474048475365554154575536241Arlington Municipal Airport C61
Dallas North No.2 C63/C67915453585636363242374274565043626774626375716942301Dallas North No.2 C63/C679
Rockwall Heath C6915246534636382632323952504341554777725254605944291Rockwall Heath C69
Grapevine Fairway C70/A301/X18215159665835353444383860575454806958627587897344301Grapevine Fairway C70/A301/X182
Kaufman C71/A304/X0711NANANANANANANANA364348453940414060474149535742271Kaufman C71/A304/X071
Granbury C73/C68115572565634323341424360504541445347473947566139281Granbury C73/C681
Eagle Mountain Lake C75 14851695534323240373850505343654745525574696140281Eagle Mountain Lake C75
Parker County C7615053665237322837324052494738444741463950565647271Parker County C76
Cleburne Airport C77/C68217378606842414556475872585548526566575160667849371Cleburne Airport C77/C682
Dallas Hinton St. C401/C60/AH161 36862635936343140334786625347676375625587767041293Dallas Hinton St. C401/C60/AH161
Dallas Executive Airport C40216459525331352835284377524243524970574359585637261Dallas Executive Airport C402
Greenville C1006/A19814640524737362740404052523950494153504753565740301Greenville C1006/A198
Pilot Point C103214845485642413858453749686039595449536463808854301Pilot Point C1032
Italy C1044/A32318049496033312835285648504438484267454448576438281Italy C1044/A323
Corsicana Airport C105115049515536413436354746474239437149455854616445331Corsicana Airport C1051
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Tyler-Longview-Marshall
Longview C19/A127/C64425752555128333128354856505345505160526760646428422Longview C19/A127/C644
Tyler Airport Relocated C8215250504230262426324546435549603848444963765531391Tyler Airport Relocated C82
Karnack C85/AFHP30314339424429313439383536464837443936404346555832421Karnack C85/AFHP303
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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El Paso-Juarez
El Paso UTEP C12/A125/X15125157536245343635483883434155513653477260534443442El Paso UTEP C12/A125/X151
Ascarate Park SE C37/A332/A172/X15914246515339303833523775404147473368467148593737421Ascarate Park SE C37/A332/A172/X159
Chamizal C41/AH126 13946516035293336493379433948463458456958513941441Chamizal C41/AH126
Socorro Hueco C49/F312141414445373327356035564547404448101706033463536441Socorro Hueco C49/F312
Skyline Park C7215151626240364035613569424050563559606362524642441Skyline Park C72
BRAVO Big Bend C67/C316/C656/C6913 N3842464536293532343034354135373634323132434545383BRAVO Big Bend C67/C316/C656/C691
Ivanhoe C41413741504837313436563553444341473465485441533640431Ivanhoe C414
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Waco
Waco Mazanec C103716443495830292731325346484141415249494458606940241Waco Mazanec C1037
Temple Georgia C104516249525629303041315152524544415753425057596938281Temple Georgia C1045
Killeen Skylark Field C104715545505535334250434647494450475450415252586546291Killeen Skylark Field C1047
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 24742434323282828464543464841532641495345543629412Beaumont-Downtown C2/A112/C2002
West Orange C9/A14124140423824232228343738324043482343374643762832342West Orange C9/A141
Port Arthur West C28/A128/A22815152593623262529454768463644452450516153582733381Port Arthur West C28/A128/A228
Hamshire C64/C65415343654024242623392840404459523246444950813626341Hamshire C64/C654
SETRPC 40 Sabine Pass C640/C165414356432520212428332958342832392757335956533345351SETRPC 40 Sabine Pass C640/C1654
SETRPC 43 Jefferson Co Airport C64314545553823252428444859423649462453515949643333391SETRPC 43 Jefferson Co Airport C643
Nederland High School C1035 14545463924262326414846373451472453465548703332381Nederland High School C1035
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Austin
Austin Northwest C3/A32226362575027262835305154525246426458534362636038282Austin Northwest C3/A322
Audubon C3816453554928313038314847545145455953465265636440281Audubon C38
Fayette County C6012 N4742424622202224264644484141444441333053574634212Fayette County C601
Dripping Springs School C6141 N6548604728272635305046494452536454444959626040281Dripping Springs School C614
CAPCOG McKinney Roughs C6841 N5344444325222428274748453544364453272746574932211CAPCOG McKinney Roughs C684
CAPCOG Lake Georgetown C6901 N6150495332363743374746555342405546566360596343291CAPCOG Lake Georgetown C690
Gorzycki Middle School C16031 N5859544427263629275052474648487056454057605738271Gorzycki Middle School C1603
Lockhart C16041 N5149474422212824254451473441425332273243534133241Lockhart C1604
St. Edwards University C16051 N4955453922202223234250383838365147362747494629221St. Edwards University C1605
CAPCOG San Marcos Staples Road C16751 N5552484317444025254557513944455442383348524636241CAPCOG San Marcos Staples Road C1675
CAPCOG Hutto College Street C66021 N5152434927242528274647443740404643393552505134231CAPCOG Hutto College Street C6602
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Houston-Galveston-Brazoria
Houston East C1/G316243505250252834293324405140334634534710144504721272Houston East C1/G316
Houston Aldine C8/AF108/X150 25851485325455444352843524637443848489046525929332Houston Aldine C8/AF108/X150
Channelview C15/AH115 34746474725303231392938533833503252448347544022213Channelview C15/AH115
Northwest Harris Co. C26/A110/X15425045465124412831303436524233373351336942536325382Northwest Harris Co. C26/A110/X154
Hou.DeerPrk2 C35/235/1001/AFH139FP2391537465422129292733345645405042327164355654520241Hou.DeerPrk2 C35/235/1001/AFH139FP239
Seabrook Friendship Park C4516656574925282932343871403850423384686062694623241Seabrook Friendship Park C45
Houston Bayland Park C53/A146 16565705823282926312854845646604569437364804620251Houston Bayland Park C53/A146
Conroe Relocated C78/A32115237465539676057403937463833383239375547535137331Conroe Relocated C78/A321
Manvel Croix Park C84169868431NA262526313466524856434059375364784219231Manvel Croix Park C84
Clinton C403/C304/AH113 34956545424242722302348604842513764489450584821263Clinton C403/C304/AH113
Houston North Wayside C405145464051242934282521414939334033464510146464722261Houston North Wayside C405
Houston Monroe C40615272753919192221282354474646403155395045583916201Houston Monroe C406
Lang C40825558587132333532312548665038463662399752625823282Lang C408
Houston Croquet C40926071734422272726312757705458494361406254874121252Houston Croquet C409
Houston Westhollow C41015764636128273031322847825645624565386561734823241Houston Westhollow C410
Houston Texas Avenue C411157616466332835283826577656415537644910558635123271Houston Texas Avenue C411
Park Place C41615567794923252826352559686351464162487553774722231Park Place C416
Sheldon C5511 NNANANANANANANANANANANANA2729332734334531353323221Sheldon C551
Baytown Wetlands Center C5521 N2222251310111213151218111430291534283025402612151Baytown Wetlands Center C552
Crosby Library C5531 N45424943283241443722384034374515NANANANANANANANA1Crosby Library C553
West Houston C5541 N2222233124222121242323302124262328233628332723221West Houston C554
La Porte Sylvan Beach C5561 N5639NANANANANANANANANA363545452968556151654320221La Porte Sylvan Beach C556
Mercer Arboretum C5571 N2219222212222723151017201919211620203022252618171Mercer Arboretum C557
Tom Bass C5581 N5068753419192020262254414146392950334349603315161Tom Bass C558
Katy Park C5591 N4346465532251818242033664439434551314143584824391Katy Park C559
Atascocita C5601 N3936354026454745372235393430312632366434424226231Atascocita C560
Meyer Park C5611 N4140404720373531231930433731292431275938445125311Meyer Park C561
Bunker Hill Village C5621 N5759586222242323281944794235533762367758634819231Bunker Hill Village C562
Huffman Wolf Road C5631 N4237384224294745421834392933342835324635463921191Huffman Wolf Road C563
HRM-3 Haden Road C603/A114 1 N49555350313335333330464849415337525110444615020241HRM-3 Haden Road C603/A114
Wallisville Road C617 1 N4845544728303736383238494242523555587649584421241Wallisville Road C617
Danciger C618 1 N7567442819191715222543392337374731253447643415161Danciger C618
Texas City 34th St. C620 1 N5760734327303033354268454143453590416059674724261Texas City 34th St. C620
UH Moody Tower C6951 N6067705527293030373263826046614168519663775224261UH Moody Tower C695
U of H-Sugarland C6961 N67761044927282427272952684970585750375853974525221U of H-Sugarland C696
UH Coastal Center C6971 N5373603123242727314087443540413352295962614217191UH Coastal Center C697
UH WG Jones Forest C6981 N5348475338655754383741464535392941355650555643391UH WG Jones Forest C698
UH West Liberty C6991 N4337404125273838372234383329322735NA3636453522211UH West Liberty C699
Lynchburg Ferry C1015/A165 14142564226292931333441423336422949428042654221211Lynchburg Ferry C1015/A165
Lake Jackson C1016 17161663125242221283248493339384829244048604219181Lake Jackson C1016
Baytown Garth C101714743504426273534383035464040523352567447584218221Baytown Garth C1017
Galveston 99th St. C1034/A320/X18315471NA6229302734374378524142433756285356624419231Galveston 99th St. C1034/A320/X183
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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San Antonio
San Antonio Northwest C2326659734928272933304565505850536653514557685538272San Antonio Northwest C23
Camp Bullis C58 16348614930313342364554604947566559555662685842331Camp Bullis C58
Calaveras Lake C5915749514428232527254451463743414933333138544335261Calaveras Lake C59
Elm Creek Elementary C5011 N6557534026252728284863434848506236283139594735251Elm Creek Elementary C501
Fair Oaks Ranch C5021 N5242604528303139364147574842515055455459605540311Fair Oaks Ranch C502
Bulverde Elementary C5031 N6046604530293343344549624547535551535659615242311Bulverde Elementary C503
New Braunfels Airport C5041 N4649433923212223213946423036394133302843443731201New Braunfels Airport C504
City of Garden Ridge C5051 N6359554227242630275255484946546145453851584939251City of Garden Ridge C505
Seguin Outdoor Learning Center C5061 N4845464124222626253744503537435133263131494033221Seguin Outdoor Learning Center C506
Heritage Middle School C6221 N5044443825212224224345413338374430292633483831221Heritage Middle School C622
CPS Pecan Valley C6781 N5751604026212326224858414141415036423338534132231CPS Pecan Valley C678
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Corpus Christi-Victoria
Corpus Christi West C425564564527232321202450443836393921202339595232222Corpus Christi West C4
Corpus Christi Tuloso C2115165543823212321213047504136403824233043563831231Corpus Christi Tuloso C21
Victoria C8714953493823212326282843523644523432283546583427221Victoria C87
Inez C6091 N5054473622222323252838493544563430263844573427201Inez C609
Holly Road C6601 N7276655332272724222757524141444625232544696137261Holly Road C660
Violet C6641 N6075674126242524NA2852524944474625252553614431251Violet C664
Ingleside C6851 N4962493928242219202551372932343521222332573834231Ingleside C685
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Lower Rio Grande Valley
Mission C43/AP14314448493528222422232630373935343624223232455428241Mission C43/AP143
Brownsville C80/AGP1801NA33483526172019191925282629302223231726476126231Brownsville C80/AGP180
Harlingen Teege C102314554463726202223252626453128312925253226464730261Harlingen Teege C1023
AreaMonitoring SitePOCSeptember 2016POCMonitoring Site
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Laredo
Laredo Vidaurri C44/AFGP144/P24414856462825192424262033282629343327262929395031271Laredo 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 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.