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

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

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

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

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

Smoke from wildfires burning in other parts of Canada  has prompted Environment Canada to issue air quality warnings or ...

A special air quality statement is now in effect until Friday afternoon in southern Ontario. Smoke from wildfires burning in Manitoba, Saskatchewan and Alberta prompted Environment and Climate Change ...

Increased instability and an extensive boundary will sweep through Ontario, bringing thunderstorms on both Tuesday and ...

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

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

For northwestern Ontario, Monday will kick off with temperatures nearing a 30°C, but dense pockets of wildfire smoke might ...

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