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.

Smoke from wildfires in Manitoba, a Western province facing its worst fire season in 30 years, has created hazardous air ...

The Minnesota Pollution Control Agency has issued an air quality alert for north central and northeast Minnesota. The alert ...

Canada had some of the worst air quality in North America on Tuesday morning according to waqi.info, the website for the ...

Wisconsin’s northernmost congressman is fed up with smoke and haze from Canada. Congressman Tom Tiffany was on social media ...

The alert will reach the orange air quality level, indicating that sensitive groups should limit time outdoors.

In Canada, the Air Quality Health Index (AQHI) is a scale developed to help people understand what the current air quality means for your health. It is an initiative among Environment Canada, Health ...

Canadian wildfire smoke lingers in Michigan. Officials issued an air quality advisory in southeast Michigan for July 15.

Unhealthy air has invaded Minnesota, Wisconsin and North Dakota early this week as a new round of wildfire smoke from Canada ...

The Michigan Department of Environment, Great Lakes, and Energy issued southeast Michigan's sixth air quality advisory of the ...

The 'unhealthy for sensitive groups' air quality in Chicago comes as an air quality alert was issued for the entire state of ...