As Canada grapples with one of its worst wildfire seasons on record, smoke from the blazes have prompted air quality alerts ...

Air quality alerts are in effect in the Philadelphia area, fueled by smoke from wildfires that are burning thousands of miles ...

Air quality remains poor in parts of Canada as wildfire smoke travels along the jet stream — with Europe now in its path.

Canada is battling more than 700 active wildfires across the country, roughly two-thirds of which are burning out of control, ...

Smoke from fires across the West and Canada is causing potential health risks for people across the U.S. Satellite images ...

Air quality has taken a serious hit across the United States as a two-fold blow of wildfires in the West and in Canada have ...

Smoke from Canadian wildfires continued to blanket parts of the U.S. Northeast on Tuesday, August 5, triggering hazardous Air ...

The scale and intensity of the fires have had transboundary effects. Smoke from the blazes has drifted across the border into ...

Air quality alerts are in effect on Tuesday in 10 states as toxic smoke from hundreds of wildfires burning in Canada ...

The thick plumes of smoke in Canada are being driven southward into the U.S. by northerly winds on the backside of an area of high pressure.

Because of all of the smoke, the Pennsylvania Department of Environmental Protection has declared a Code Orange Air Quality ...

There have been few fires in Quebec's forests this year, but large fires in the Prairies are still raging — and the province ...