Wildfire smoke degrades air quality in swaths of Ontario, with Toronto ranking among the worst in the world on Monday.

Smoke from wildfires in Manitoba, a Western province facing its worst fire season in 30 years, has created hazardous air ...

Intense wildfires in Canada’s western provinces continued blazing Wednesday, sending smoke southward and triggering air quality alerts throughout the United States. More than 400 wildfires are ...

Wildfires in Canada are continuing to blanket its southern neighbors in smog, triggering new air quality alerts in the northern high plains, Midwest and Great Lakes, according to the National ...

MILES PARKS, HOST: Something like 500 wildfires continue to burn across Canada, and it's affecting the air we breathe. Earlier this week, the air quality in Toronto was among the worst in the world.

Record-breaking wildfires in Canada are impacting air quality in the U.S. The Canadian wildfire season has started early and already broken records, with toxic smoke drifting south to the U.S. and ...

It's due to a heavy band of smoke from wildfires in Canada moving in across the state starting on Wednesday for the northwest ...

The current infrastructure also isn’t set up to fully account for the shifting behavior of wildfire smoke, which can travel ...

Canada is dealing with a series of intense wildfires that have spread from the western provinces to Quebec, with hundreds of forest fires burning. The smoke has traveled into the United States ...

The smoke and haze from raging wildfires in Canada covered the eastern United States this week, prompting air quality warnings across the eastern seaboard.. New York City’s skyline is barely ...

Wildfires burning in Canada continue to create hazardous air quality conditions in several states in the northern U.S. Plumes of smoke from the fires blazing in Halifax, Nova Scotia, began ...