The red-level air quality index (AQI) category—covering values from 151 to 200—means the air is unhealthy for everyone, not ...

Cities in California, Texas and Arizona are expecting air quality to become unhealthy for sensitive groups on Thursday.

The map below displays the current air quality at monitoring sites in the U.S., Canada and Mexico. Air monitoring sites are color-coded based on the pollutant (ozone or particulate matter ...

On Wednesday at 3:35 p.m. an air quality alert was reported by the NWS Greenville-Spartanburg SC in effect until Thursday at ...

Wondering what the air quality is like in your neighborhood? This interactive map gives you up-to-the-minute air quality updates and health recommendations for communities across Los Angeles ...

The NWS San Diego CA reported an air quality alert at 11:08 a.m. on Wednesday in effect until Thursday at 8 p.m. for ...

Poor air quality expected in Houston Thursday ahead of a cold front. Experts advise limiting outdoor time, especially for ...