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Daily Maximum Eight-Hour Ozone Averages for July 2022

The table below lists the peak daily maximum eight-hour ozone concentrations measured in July 2022 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 2022
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 2666242NA
Keller C172666640NA
Frisco C31/C6801525642NA
Denton Airport South C56/A163/X1571656647NA
Arlington Municipal Airport C611525435NA
Dallas North No.2 C63/C6791576136NA
Rockwall Heath C691434331NA
Grapevine Fairway C70/A301/X1821656846NA
Kaufman C71/A304/X0711484434NA
Granbury C73/C6811595339NA
Eagle Mountain Lake C75 1736539NA
Cleburne Airport C77/C6821565237NA
Dallas Hinton St. C401/C60/AH161 3525630NA
Dallas Executive Airport C4021545737NA
Greenville C1006/A1981NV3931NA
Pilot Point C10321575647NA
Italy C1044/A3231474531NA
Corsicana Airport C10511474535NA
AreaMonitoring SitePOCJuly 2022
Longview C19/A127/C6442373527NA
Tyler Airport Relocated C821514135NA
Karnack C85/AFHP3031433732NA
AreaMonitoring SitePOCJuly 2022
El Paso-Juarez
Ascarate Park SE C37/A332/A172/X1591607368NA
Chamizal C41/AH126 1607368NA
Socorro Hueco C49/F3121677666NA
Skyline Park C721707268NA
Ivanhoe C414/F5141597159NA
AreaMonitoring SitePOCJuly 2022
Waco Mazanec C10371494329NA
Temple Georgia C10451584431NA
Killeen Skylark Field C10471NV5034NA
AreaMonitoring SitePOCJuly 2022
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2302020NA
West Orange C9/A1412242124NA
Port Arthur West C28/A128/A2281262018NA
Hamshire C64/C65412922NVNA
SETRPC 40 Sabine Pass C640/C16541322219NA
SETRPC 43 Jefferson Co Airport C6431312019NA
Nederland 17th Street C10351332221NA
AreaMonitoring SitePOCJuly 2022
Austin North Hills Drive C3/A3222674432NA
Audubon C381564129NA
Dripping Springs School C6141 N715034NA
CAPCOG Lake Georgetown C6901 N695538NA
Lockhart C16041 N574032NA
CAPCOG Bastrop CAMS16121 N613829NA
CAPCOG Elgin C16131 N574132NA
CAPCOG East Austin C16191 N674433NA
CAPCOG Round Rock Brushy Creek W C16201 N684835NA
CAPCOG San Marcos Staples Road C16751 N644334NA
AreaMonitoring SitePOCJuly 2022
Houston East C1/G3162352729NA
Houston Aldine C8/AF108/X150 2272830NA
Channelview C15/AH115 3322726NA
Northwest Harris Co. C26/A110/X1542473233NA
Hou.DeerPrk2 C35/235/1001/AFH139FP2391342523NA
Seabrook Friendship Park C451292117NA
Houston Bayland Park C53/A146 1NVNANANA
Conroe Relocated C78/A3211353940NA
Manvel Croix Park C841NV2323NA
Houston North Wayside C405/C10331262428NA
Houston Monroe C4061322421NA
Lang C4082302628NA
Houston Croquet C4092342424NA
Houston Westhollow C410/C30031362324NA
Park Place C4161352625NA
Houston Harvard Street C4171353029NA
Sheldon C5511 N27NVNANA
Baytown Wetlands Center C5521 N272017NA
West Houston C5541 N382830NA
La Porte Sylvan Beach C5561 N332216NA
Tom Bass C5581 NNVNANANA
Katy Park C5591 NNVNANANA
UH Moody Tower C6951 N372726NA
UH WG Jones Forest C6981 N423739NA
Lynchburg Ferry C1015/A165 1332420NA
Lake Jackson C1016 1NANV20NA
Baytown Garth C10171413333NA
Galveston 99th St. C1034/A320/X1831361818NA
UH Smith Point C16061 N382222NA
UH Launch Trailer C16111 N352626NA
Liberty Sam Houston Library C16261 N303031NA
AreaMonitoring SitePOCJuly 2022
San Antonio
San Antonio Northwest C232694332NA
Camp Bullis C58 1674735NA
Calaveras Lake C591653630NA
Elm Creek Elementary C5011 N683929NA
Fair Oaks Ranch C5021 N685237NA
Bulverde Elementary C5031 N523628NA
New Braunfels Airport C5041 N493024NA
City of Garden Ridge C5051 N623327NA
Seguin Outdoor Learning Center C5061 N472823NA
Heritage Middle School C6221 N653730NA
CPS Pecan Valley C6781 N462317NA
Government Canyon C16101 N593526NA
AreaMonitoring SitePOCJuly 2022
Corpus Christi-Victoria
Corpus Christi West C42261822NA
Corpus Christi Tuloso C211291621NA
Victoria C871371921NA
AreaMonitoring SitePOCJuly 2022
Lower Rio Grande Valley
Harlingen Teege C10231242024NA
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
  • The AQI for ozone is based on either the peak eight-hour running average since midnight OR the peak one-hour measurement since midnight.

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.