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

Wildfire smoke drifting in from the Prairies and northwestern Ontario is expected to cause reduced visibility and poor air ...

Environment Canada has issued a special air quality warnings for Ontario and western Quebec due to wildfire smoke drifting ...

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

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That wind pattern is forecast over the weekend, from Saturday into Sunday, which will likely bring smoke and haze to the ...

In the upper Midwest of the United States, Michigan, Wisconsin and Minnesota have issued air quality warnings as smoke from ...

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

Smoke from wildfires burning in northern Ontario and the Prairies continued to create hazy conditions in Toronto and Ottawa, the major cities in Canada, local media reported Wednesday.

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