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

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

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 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 ...

Cook County is under a heat watch through Thursday evening, according to forecasters. The temperature could rise to feel like ...

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

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

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

Toronto and the GTA are under a heat wave and poor air quality warning issued by Environment Canada on July 14, 2025, due to ...

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