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Peak Daily One-Hour Ozone Averages for October 2022

The table below lists the peak daily one-hour ozone concentrations measured in October 2022 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 SitePOCOctober 2022
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 2757875658286
Keller C172676570667478
Frisco C31/C6801555561656676
Denton Airport South C56/A163/X1571615861717070
Arlington Municipal Airport C61164706061NA87
Dallas North No.2 C63/C6791575961707279
Rockwall Heath C691525551546677
Grapevine Fairway C70/A301/X1821615971697685
Kaufman C71/A304/X0711575860596479
Granbury C73/C6811706961607279
Eagle Mountain Lake C75 1666973698078
Parker County C761767873617680
Cleburne Airport C77/C6821697255617587
Dallas Hinton St. C401/C60/AH161 3565963626474
Dallas Executive Airport C4021626563596992
Greenville C1006/A1981515357565972
Pilot Point C10321535960676674
Italy C1044/A3231495353525967
Corsicana Airport C10511616061556565
AreaMonitoring SitePOCOctober 2022
Longview C19/A127/C6442565755626466
Tyler Airport Relocated C821586460667070
Karnack C85/AFHP3031495251575570
AreaMonitoring SitePOCOctober 2022
El Paso-Juarez
Ascarate Park SE C37/A332/A172/X1591394450684638
Chamizal C41/AH126 1394453575341
Socorro Hueco C49/F3121455052705346
Skyline Park C721494855675640
Ivanhoe C414/F5141374147654737
Ojo De Agua C1021/FG121/FG221153556136NANA
AreaMonitoring SitePOCOctober 2022
Waco Mazanec C10371525551536259
Temple Georgia C10451676859587568
Killeen Skylark Field C10471NANANA596964
AreaMonitoring SitePOCOctober 2022
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 2465550435259
West Orange C9/A1412476844505056
Port Arthur West C28/A128/A2281495454516361
Hamshire C64/C6541585864607259
SETRPC Port Arthur C6281 N6463NANANANA
SETRPC 40 Sabine Pass C640/C16541545648434967
SETRPC Mauriceville 42 C642/C311/C6651 N5165NANANANA
SETRPC 43 Jefferson Co Airport C6431515955456366
Nederland 17th Street C10351536058505963
AreaMonitoring SitePOCOctober 2022
Austin North Hills Drive C3/A3222816968808679
Audubon C381755862727764
Dripping Springs School C6141 N887691848187
CAPCOG Lake Georgetown C6901 N766362687469
Lockhart C16041 N585660605262
St. Edwards University C16051 N686061676567
CAPCOG Bastrop CAMS16121 N554953575460
CAPCOG Elgin C16131 N625756605866
CAPCOG East Austin C16191 N746666727578
CAPCOG Round Rock Brushy Creek W C16201 N675960667465
CAPCOG San Marcos Staples Road C16751 N706666686377
AreaMonitoring SitePOCOctober 2022
Houston East C1/G3162545262546661
Houston Aldine C8/AF108/X150 2455143525057
Channelview C15/AH115 3484952515555
Northwest Harris Co. C26/A110/X1542595458667068
Hou.DeerPrk2 C35/235/1001/AFH139FP2391645969676875
Seabrook Friendship Park C451474950485972
Houston Bayland Park C53/A146 1697069758383
Conroe Relocated C78/A3211555558585563
Manvel Croix Park C841847582779290
Clinton C403/C304/AH113 3656169657271
Houston North Wayside C405/C10331474843474956
Houston Monroe C4061565564597463
Lang C4082615756626466
Houston Croquet C4092636267628175
Houston Westhollow C410/C30031645664647072
Park Place C4161646368587870
Houston Harvard Street C4171616656656475
Sheldon C5511 NNANA46505560
Baytown Wetlands Center C5521 N515447545567
Crosby Library C5531 N484745465257
West Houston C5541 N655764727475
La Porte Sylvan Beach C5561 N464848496069
Mercer Arboretum C5571 N565351556362
Tom Bass C5581 N787084688680
Katy Park C5591 N665565697571
Atascocita C5601 N454640454953
Meyer Park C5611 N555457606562
Bunker Hill Village C5621 N625661636768
Huffman Wolf Road C5631 N474743455053
HRM-3 Haden Road C603/A114 1 N5856NANANANA
Wallisville Road C617 1 N5152NANANANA
Texas City 34th St. C620 1 N6664NANANANA
UH Moody Tower C6951 N606063617572
UH WG Jones Forest C6981 N565657596763
Lynchburg Ferry C1015/A165 1514958476174
Lake Jackson C1016 1638463656028
Baytown Garth C10171535553566767
Galveston 99th St. C1034/A320/X1831666856625965
UH Smith Point C16061 N565258536759
UH Launch Trailer C16111 N606063615273
Liberty Sam Houston Library C16261 N474845445057
AreaMonitoring SitePOCOctober 2022
San Antonio
San Antonio Northwest C232847181727883
Camp Bullis C58 1827281747983
Calaveras Lake C591746466646373
Elm Creek Elementary C5011 N7855NANANA73
Fair Oaks Ranch C5021 N535160545551
Bulverde Elementary C5031 N605964535755
New Braunfels Airport C5041 N605956585257
City of Garden Ridge C5051 N726468605869
Seguin Outdoor Learning Center C5061 N605965635461
Heritage Middle School C6221 N756666666476
CPS Pecan Valley C6781 N514746394250
Government Canyon C16101 N736273596871
AreaMonitoring SitePOCOctober 2022
Corpus Christi-Victoria
Corpus Christi West C42615865556542
Corpus Christi Tuloso C211555562496140
Victoria C871625461585551
AreaMonitoring SitePOCOctober 2022
Lower Rio Grande Valley
Mission C43/AP1431696471656064
Harlingen Teege C10231595362495151
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.