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 ...

An air quality alert is in effect for parts of northern Minnesota as wildfire smoke from fires burning in Canada again drifts ...

The extended forecast suggests unsettled weather midweek, with rain probabilities ranging from 30% to 60%. There is some ...

A group of Republican lawmakers has complained that smoke from Canadian wildfires is ruining summer for Americans, just days ...

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

World Cup being hosted by Canada, Mexico and the United States is less than a year away and FIFA’s protocols for matches ...

(The Center Square) – Wisconsin’s northernmost congressman is fed up with smoke and haze from Canada. Congressman Tom Tiffany ...

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

The Chicago area recorded ozone levels of 156 late Monday afternoon. Levels above 100 are considered unhealthy. Residents ...

Additional plumes of smoke from Canada's active wildfires prompt officials to issue a statewide air quality alert on July 14.