The U.S. Air Quality Index (AQI) is the Environmental Protection Agency’s tool for reporting outdoor air quality and health.

Plumes of smoke are blanketing large swaths of the U.S. and parts of Europe, presenting risks for those breathing it. The Midwest, Northeast and Great Lakes regions of the U.S. have ...

The Iowa Department of Natural Resources issued an air quality warning across the state from Tuesday to Thursday morning, ...

To check your state's air quality, visit AirNow's website, and plug in your zip code, city or state. Here's what to know as of Wednesday, June 4. Parts of Wisconsin, Iowa, Illinois, Indiana and ...

Smoke from Canadian wildfires is beginning to worsen air quality in the eastern U.S. as several Midwestern states battle ...

The Wisconsin Department of Natural Resources issued an air quality advisory through noon June 4 across parts of Wisconsin.

Trump spoke with Putin about Ukraine attacks and Iran's nuclear program; Putin may join Iran talks to help reach a resolution ...

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Online resources help you make sense of the hazy skies and poor air quality you might be experiencing as a result of fires to ...

Smoke from wildfires raging in Canada has drifted into the United States, affecting air quality as far south as Florida.

Western Washington faces increased wildfire threats following a notably dry May, with rainfall at Seattle-Tacoma Airport ...

The National Oceanic and Atmospheric Administration’s Space Weather Prediction Center has issued a G4 (severe) geomagnetic ...