Wildfire activity has not slowed down in northwestern Ontario, as three First Nations remain under evacuation, with hundreds ...

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

Smoke from the Canadian wildfires has triggered air quality warnings in several provinces and surrounding U.S. states. As of ...

Toronto’s air quality was briefly the worst in the world today as smoke from wildfires drifts into the region.

For air quality, meteorologists’ models show smoke is likely to drift back to southern Ontario late Saturday or Sunday.

Prolific smoke that’s blown across North America and beyond over the past couple of weeks will bring reduced air quality to ...

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

The U.S. Environmental Protection Agency warns that wildfire smoke contains dangerous pollutants in the form of fine ...

Wildfire smoke spreading throughout northwestern Ontario has prompted closures and event cancellations on Tuesday.

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

Smoke from forest fires as far away as northwestern Ontario and the prairies are continuing to cause poor air quality for ...

Online map tools and resources let you track the Canadian wildfires and monitor poor air-quality conditions, which are ...