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 ...

Smoke billowing from wildfires is leading to poor air quality and reducing visibility throughout Manitoba this ...

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

Air quality warnings are in effect for a large area of Western and Central Canada this weekend as wildfire smoke continues to choke parts of the country. Many communities in Manitoba, as well as ...

Environment Canada says much of the province will be dealing with poor conditions, with Winnipeg expected to see an air ...

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

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

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.

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

The current infrastructure also isn’t set up to fully account for the shifting behavior of wildfire smoke, which can travel ...