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

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

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

Air quality warnings remain in effect for parts of Saskatchewan and Manitoba as wildfire smoke continues to linger over the ...

Western winds have pushed smoke plumes from Prairie wildfires toward Quebec and Ontario, including Toronto and the GTA ...

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

Risk designations can change regularly in the same community, Environment Canada says, so it's important to keep checking the ...

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

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

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

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.