Ozone Action Day for Houston-Galveston-Brazoria region on Thursday

- The Texas Commission on Environmental Quality has rated the air quality index for the Houston-Galveston-Brazoria region as “unhealthy for sensitive groups,” meaning that Thursday is classified as an Ozone Action Day.

The commission recommends that active children and adults, and people with lung disease, such as asthma, should reduce prolonged or heavy exertion outdoors.

The forecasts for other regions in Texas are either good or moderate.

Air Quality Index Levels of Health Concern Numerical
Good 0 to 50 Air quality is considered satisfactory, and air pollution poses little or no risk.
Moderate 51 to 100 Air quality is acceptable; however, for some pollutants there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.
Unhealthy for Sensitive Groups 101 to 150 Members of sensitive groups may experience health effects. The general public is not likely to be affected.
Unhealthy 151 to 200 Everyone may begin to experience health effects; members of sensitive groups may experience more serious health effects.
Very Unhealthy 201 to 300 Health alert: everyone may experience more serious health effects.
Hazardous 301 to 500 Health warnings of emergency conditions. The entire population is more likely to be affected.
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