Allegheny County is increasing air quality monitoring after an explosion at a U.S. Steel plant south of Pittsburgh killed two ...

High school coaches and administrators across Minnesota have been asked to be aware of air-quality levels as athletes return ...

Wildfires are burning across the Western United States and Canada, affecting large parts of the country as smoke drifts. With ...

Concerns for air quality linger after Monday's explosion in Clairton Donald Trump reacts to Melania's $1B defamation threat ...

While the smoke is worst along the Western Slope where the fires are burning, levels are also fluctuating on the Front Range.

The City Council dropped a $202 million effort that would have expanded the city’s cooling centers to also accommodate people ...

Some regions of Louisiana are known for having the worst air quality, but other areas are said to have the best. Here's where the best air quality is.

The Kyrene School District released an air quality report on Tuesday showing the air quality measurement at the Kyrene De La ...

Official air-quality results for Kyrene de la Sierra Elementary School show elevated levels of potentially harmful chemicals.

The health department began deploying mobile air units Thursday provided by Pennsylvania’s Department of Environmental ...