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Daily Maximum Eight-Hour Ozone Averages for February 2016

The table below lists the peak daily maximum eight-hour ozone concentrations measured in February 2016 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 SitePOCFebruary 2016
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 23237373639NA
Keller C1723837373844NA
Frisco C31/C68013636373541NA
Midlothian OFW C52/A13713939383443NA
Denton Airport South C56/A163/X1571NV39383944NA
Arlington Municipal Airport C6113737373341NA
Dallas North No.2 C63/C67914237373341NA
Rockwall Heath C6913635363342NA
Grapevine Fairway C70/A301/X18213838393641NA
Kaufman C71/A304/X07114137363240NA
Granbury C73/C68113840404046NA
Eagle Mountain Lake C75 13436383746NA
Parker County C7614340394148NA
Cleburne Airport C77/C68213940403946NA
Dallas Hinton St. C401/C60/AH161 33735362539NA
Dallas Executive Airport C40213832343139NA
Greenville C1006/A19813838383843NA
Pilot Point C103213336373739NA
Italy C1044/A32314140373845NA
Corsicana Airport C105114539363343NA
AreaMonitoring SitePOCFebruary 2016
Longview C19/A127/C64424044383945NA
Tyler Airport Relocated C8214142414145NA
Karnack C85/AFHP30313745384043NA
AreaMonitoring SitePOCFebruary 2016
El Paso-Juarez
El Paso UTEP C12/A125/X15123939373337NA
Ascarate Park SE C37/A332/A172/X15913533353639NA
Chamizal C41/AH126 14039392937NA
Socorro Hueco C49/F31213940363940NA
Skyline Park C7214241403840NA
BRAVO Big Bend C67/C316/C656/C6913 NNVNA454545NA
Ivanhoe C41413938403836NA
AreaMonitoring SitePOCFebruary 2016
Waco Mazanec C103713840383946NA
Temple Georgia C104514043404146NA
Killeen Skylark Field C104714243404047NA
AreaMonitoring SitePOCFebruary 2016
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 22823363841NA
West Orange C9/A14122716333739NA
Port Arthur West C28/A128/A22813024384145NA
Hamshire C64/C65413327374245NA
SETRPC Port Arthur C6281 N2826373743NA
SETRPC 40 Sabine Pass C640/C165413426384345NA
SETRPC Mauriceville 42 C642/C311/C6651 N3124353939NA
SETRPC 43 Jefferson Co Airport C64312619323538NA
Nederland High School C1035 13323373945NA
AreaMonitoring SitePOCFebruary 2016
Austin Northwest C3/A32224346424350NA
Audubon C38142444041NVNA
AreaMonitoring SitePOCFebruary 2016
Houston East C1/G31623730353545NA
Houston Aldine C8/AF108/X150 23941394044NA
Channelview C15/AH115 32437383738NA
Northwest Harris Co. C26/A110/X15423841363739NA
Hou.DeerPrk2 C35/235/1001/AFH139FP23913430333641NA
Seabrook Friendship Park C4512827353543NA
Houston Bayland Park C53/A146 13438363841NA
Conroe Relocated C78/A32114345414146NA
Manvel Croix Park C8413841384046NA
Clinton C403/C304/AH113 33131333738NA
Houston North Wayside C40513030303236NA
Houston Monroe C40613030293034NA
Lang C40823638353438NA
Houston Croquet C40923638343642NA
Houston Westhollow C41013740363844NA
Houston Texas Avenue C41113030293137NA
Park Place C41613029293237NA
Sheldon C5511 N3445434345NA
Baytown Wetlands Center C5521 N2126252729NA
Crosby Library C5531 N3746424245NA
West Houston C5541 N3538343542NA
La Porte Sylvan Beach C5561 N2330343440NA
Mercer Arboretum C5571 N2927272832NA
Tom Bass C5581 N3030313138NA
Katy Park C5591 N2733293137NA
Atascocita C5601 N3032303135NA
Meyer Park C5611 N3235323234NA
Bunker Hill Village C5621 N3639363741NA
Huffman Wolf Road C5631 N3744394044NA
HRM-3 Haden Road C603/A114 1 N3333363642NA
Wallisville Road C617 1 N3442383842NA
Danciger C618 1 N3540363843NA
Texas City 34th St. C620 1 N3127404145NA
UH Moody Tower C6951 N3637353641NA
U of H-Sugarland C6961 N3432313242NA
UH Coastal Center C6971 N3229363812NA
UH WG Jones Forest C6981 N4046414045NA
UH West Liberty C6991 N3643394044NA
Lynchburg Ferry C1015/A165 12330333238NA
Lake Jackson C1016 13740414150NA
Baytown Garth C101713238373943NA
Galveston 99th St. C1034/A320/X18313528424449NA
AreaMonitoring SitePOCFebruary 2016
San Antonio
San Antonio Northwest C2324039373947NA
Camp Bullis C5814345414349NA
Calaveras Lake C5914243394047NA
Heritage Middle School C6221 N4443383946NA
CPS Pecan Valley C6781 N3434303239NA
AreaMonitoring SitePOCFebruary 2016
Corpus Christi-Victoria
Corpus Christi West C423944404245NA
Corpus Christi Tuloso C2113743384142NA
Victoria C8714147404245NA
Holly Road C6601 N3235333739NA
Odem C6861 N3642363944NA
Taft C6871 N3337323440NA
AreaMonitoring SitePOCFebruary 2016
Lower Rio Grande Valley
Mission C43/AP14313536343933NA
Brownsville C80/AGP18013842384344NA
Harlingen Teege C102313742394343NA
AreaMonitoring SitePOCFebruary 2016
Laredo Vidaurri C44/AFGP144/P24413838343741NA
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 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.