In South Carolina, an air quality alert is in effect until noon Thursday for the towns and cities of Mountain Rest, Rocky ...

Several states were experiencing 'unhealthy' levels ... Central and northwestern parts of the state measured 191 on the EPA's ...

More than 250,000 people are advised to limit their time outdoors on Friday due to unhealthy or very unhealthy air quality.

This measure, based on data from the Environmental Protection Agency, evaluates states on the number of days the Air Quality Index in counties was not rated “good.” U.S. News calculated a ...

As fires rage across the West Coast, destroying homes and forcing evacuations, the air we breathe has been severely impacted. In the following California air quality map, you can see how the air ...

The EPA measures regional air quality index (AQI) by how hazardous it is to the general public. Discover the AQI in your city by searching below.

The air and water quality subcategory informs the best states for natural environment rankings and the overall Best States rankings. It comprises two measures: the number of days with an air ...

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 ...