Wildfire smoke degrades air quality in swaths of Ontario, with Toronto ranking among the worst in the world on Monday.

Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.

The MPCA to implement an Alert beginning at 1PM Saturday through Monday morning. Northern Minnesota will be in the Unhealthy ...

The DEC has issued an air quality health advisory for most of upstate New York due to elevated levels of fine particulate ...

There will be pleasant summer temperatures for the weekend, with a steamy and stormy heat wave expected next week.

Air quality in the Chicago area has remained poor for three days in a row, the NBC 5 Storm Team reported Wednesday morning.

The Cram fire is the largest in the state, expanding overnight to more than 64,000 acres, according to the Northwest ...

The air quality is poor today in northern Illinois due to migrating Canadian wildfire smoke. See the AQI in your area.

An air quality alert in the Chicago area will stretch into a third day as pollutants continue to linger in the air at high ...