Much of southern Ontario was under an air quality statement on Thursday and Friday that lifted early Saturday morning.

WEATHER ALERT ENVIRONMENT CANADA ************************* Issued at 2025-06-07 12:12PM EDT by Environment Canada, the ...

Much of Ontario remains under special air quality statements or warnings today amid smoke from wildfires burning in other ...

Wildfire smoke in Ontario has dropped air quality to poor levels, but it will finally improve come Sunday as the centre of ...

More than 200 wildfires are raging across Canada, sending a thick blanket of choking smoke through the U.S. Midwest. Experts ...

An air quality map shows conditions improving in the U.S. on Friday as smoke from the Canadian wildfires subsides.

Parts of Canada are seeing some of their most unhealthy air yet, and the smoke is likely to move over the United States again ...

Toxic metals, including arsenic, could be released by Canadian wildfires, posing health risks to those downwind.

Smoke will likely be an ongoing health hazard across North America for the next few months. Here's what to expect.

Environment Canada issued a special air quality statement for Toronto and most of Ontario due to the smoke from wildfires ...