Amid thousands of evacuations and the spread of smoke to the United States, the Canadian armed forces and the Coast Guard ...

Canada's 2025 wildfire season is now the second-worst on record. The latest figures posted by the Canadian Interagency Forest ...

Canada is battling more than 700 active wildfires across the country, roughly two-thirds of which are burning out of control, ...

Degraded and/or unsafe air quality levels will continue across parts of Canada Monday as wildfire smoke lingers. However, the ...

Air quality remains poor in parts of Canada as wildfire smoke travels along the jet stream — with Europe now in its path.

As wildfires become more frequent and intense across Canada, fire officials are seeing stark differences between northwestern and northeastern Ontario. They say it all comes down to what’s burning, ...

Wildfires are common in Canada's western provinces, but this year the eastern provinces of Nova Scotia, Quebec and parts of Ontario are also reeling from out of control wildfires, sending plumes ...

Midwest and Northeast regions in the U.S. are seeing poor air quality from Canadian wildfires. See the map showing where the wildfires burn.

This story was originally published by Grist. Sign up for Grist’s weekly newsletter here. More than 200 wildfires are blazing across central and western Canada, half of which are out of control ...

Wildfires are common in Canada's western provinces, but this year the eastern provinces of Nova Scotia, Quebec and parts of Ontario have also reeled from out-of-control wildfires.

As Canada’s wildfire smoke creeps down into the U.S., it’s also transforming. Chemical reactions between gases and sunlight create ozone, which further exacerbates lung conditions like asthma.