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Ozone Data

Current and historical measurements of ozone air pollution in Texas.

Air Quality Forecast and Ozone Action Day E-Mail Alerts
Sign up to receive Today's Texas Air Quality Forecast and Ozone Action Day e-mail alerts for several metropolitan areas throughout Texas.

Current Texas Ozone Levels
Map showing latest ozone levels in metropolitan areas across Texas.

Daily Maximum Eight-Hour Ozone Averages
Maximum eight-hour ozone averages measured daily from yesterday back to 1997.

Eight-Hour Ozone High-Value Days
Averages that meet or exceed 85 parts per billion ozone. Data available from one hour ago back to 1997.

Four Highest Eight-Hour Ozone Concentrations
Calculated from TCEQ monitoring site data available from today back to 1997.

High One-Hour Ozone Values
Measurements of high one-hour ozone concentrations.

High Ozone in Your Metro Area
Table that summarizes high one-hour averages greater than 125 ppb and eight-hour ozone averages greater than 76 ppb in Texas metropolitan areas.

Hourly Air Pollution Data by Day, Month, or Year
Search for air quality data collected on a specific day, during a particular month, or a definite year and at a specific TCEQ air monitoring site.

Ozone Hourly Averages (and Other Air Pollutants)
The hourly average concentration of ozone measured an hour ago back to 1997.

Peak Daily One-Hour Ozone Averages
Maximum one-hour ozone averages measured daily from yesterday back to 1996.

Texas Cities' Compliance with Eight-Hour Ozone Standard
Report for the fourth-highest daily maximum eight-hour average ozone concentrations in Texas Metropolitan areas.