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

Air pollution fell substantially as the city restricted car traffic and made way for parks and bike lanes. Over the past 20 ...

Across the United States, 58% of counties have no active air-quality monitoring sites, according to a new study. Rural counties, especially those in the Midwest and South, are less likely to have ...

In North Carolina, Rutherford County is under a code orange air quality action day for fine particulates until midnight, indicating that pollution concentration in the region could reach or ...

The decision bought officials time to avert economic harm, but raised concern from health advocates about the continued ...

Environment Minister Hanif Faisol Nurofiq asked industrial parks to comply with environmental regulations, including by ...