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 wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia and Europe during the past week.

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

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

Wildfires scorching several Canadian provinces have driven at least 33,400 people from their homes, with smoke now reaching ...

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

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

The country's legacy of mining means that toxic metals could be carried along plumes of smoke, endangering people in its path ...

The weather agency says residents in impacted areas should consider limiting time outdoors and be mindful of smoke exposure ...

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

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

Environment Canada has issued a special air quality statement for most of Ontario as wildfire smoke blows over the province. And according to an international air quality ranking, Toronto is now among ...