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Peak Daily One-Hour Ozone Averages for December 2022

The table below lists the peak daily one-hour ozone concentrations measured in December 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 SitePOCDecember 2022
Dallas-Fort Worth
Ft. Worth Northwest C13/AH302 223213021
Keller C17225212922
Frisco C31/C680129273024
Denton Airport South C56/A163/X157124252821
Arlington Municipal Airport C61126212823
Dallas North No.2 C63/C679127272720
Rockwall Heath C69127252520
Grapevine Fairway C70/A301/X182123223021
Kaufman C71/A304/X071132292626
Granbury C73/C681129233327
Eagle Mountain Lake C75 126233224
Parker County C76129253127
Cleburne Airport C77/C682131223230
Dallas Hinton St. C401/C60/AH161 321232519
Dallas Executive Airport C402128272923
Greenville C1006/A198132282928
Pilot Point C1032125253128
Italy C1044/A323129252323
Corsicana Airport C1051134282524
AreaMonitoring SitePOCDecember 2022
Longview C19/A127/C644239282135
Tyler Airport Relocated C82136292426
Karnack C85/AFHP303134302828
AreaMonitoring SitePOCDecember 2022
El Paso-Juarez
Ascarate Park SE C37/A332/A172/X159132192629
Chamizal C41/AH126 128242328
Socorro Hueco C49/F312139253138
Skyline Park C72135302432
Ivanhoe C414/F514133232629
Ojo De Agua C1021/FG121/FG221135252317
AreaMonitoring SitePOCDecember 2022
Waco Mazanec C1037125252120
Temple Georgia C1045126182421
Killeen Skylark Field C1047128212724
AreaMonitoring SitePOCDecember 2022
Beaumont-Port Arthur
Beaumont-Downtown C2/A112/C2002 231332519
West Orange C9/A141233382215
Port Arthur West C28/A128/A228131342716
Hamshire C64/C654134382622
SETRPC 40 Sabine Pass C640/C1654136392413
SETRPC 43 Jefferson Co Airport C643131332515
Nederland 17th Street C1035133382716
AreaMonitoring SitePOCDecember 2022
Austin North Hills Drive C3/A322223162222
Audubon C38120142221
AreaMonitoring SitePOCDecember 2022
Houston East C1/G316229282221
Houston Aldine C8/AF108/X150 229262122
Channelview C15/AH115 328252319
Northwest Harris Co. C26/A110/X154228252017
Hou.DeerPrk2 C35/235/1001/AFH139FP239129292220
Houston Bayland Park C53/A146 130312324
Conroe Relocated C78/A321136302321
Manvel Croix Park C84131292232
Clinton C403/C304/AH113 365482622
Houston North Wayside C405/C1033128241821
Houston Monroe C406128272121
Lang C408225272224
Houston Croquet C409229302126
Houston Westhollow C410/C3003123231617
Park Place C416139393227
Houston Harvard Street C417128302126
Sheldon C5511 N28262219
Baytown Wetlands Center C5521 N32322316
Crosby Library C5531 N34332219
West Houston C5541 N27272123
La Porte Sylvan Beach C5561 N36312216
Mercer Arboretum C5571 N30282120
Tom Bass C5581 N31291828
Katy Park C5591 N30281924
Atascocita C5601 N30251920
Meyer Park C5611 N28271921
Bunker Hill Village C5621 N27281824
Huffman Wolf Road C5631 N31332320
UH Moody Tower C6951 N29312223
UH WG Jones Forest C6981 N31302222
Lynchburg Ferry C1015/A165 132261815
Lake Jackson C1016 136342557
Baytown Garth C1017137413023
Galveston 99th St. C1034/A320/X183137412817
Liberty Sam Houston Library C16261 N30312518
AreaMonitoring SitePOCDecember 2022
San Antonio
San Antonio Northwest C23223182718
Camp Bullis C58 123182918
Calaveras Lake C59122182017
Heritage Middle School C6221 N21141916
Government Canyon C16101 N12999
AreaMonitoring SitePOCDecember 2022
Corpus Christi-Victoria
Corpus Christi West C4229182435
Corpus Christi Tuloso C21126201833
Victoria C87126211931
AreaMonitoring SitePOCDecember 2022
Lower Rio Grande Valley
Mission C43/AP143128151623
Harlingen Teege C1023127201928
AreaMonitoring SitePOCDecember 2022
Laredo College C441 N28201512
 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.