Wildfires burning in Canada's oil-producing province of Alberta have affected more than 344,000 barrels per day of oil sands ...

Smoke from wildfires in Canada is making it harder to breathe in Ohio and several other states. Here's how long it will last ...

The pull of the foul air to Northern California was significant enough that the Bay Area Air District issued an air quality ...

Roughly 17,000 residents in the Canadian province of Manitoba have been evacuated because of nearly two dozen active ...

The worst wildfires in decades are tearing through Saskatchewan, Canada, and at least two people have been killed in blazes ...

Air quality reached "unhealthy" levels in North Dakota and small swaths of Montana, Minnesota and South Dakota, according to ...

A gray haze from wildfire smoke could be seen in Cincinnati, and the entire state of Minnesota is under an air quality alert.

Wildfires in Canada have forced thousands of residents to evacuate in three provinces, impacting air quality in the U.S. — ...

A series of wildfires burning across central Canada sent smoke billowing into the U.S. over the weekend, with few signs that ...

A Bermudian resident of Manitoba told of her “concern, fear and sadness” as an unprecedented series of wildfires swept across ...