Republican lawmakers are blaming Canada for not preventing and containing wildfires, whose smoke has fouled the air in ...

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

Minnesota and Canada share so much: frigid winters, a love for hockey — and more recently, massive plumes of toxic wildfire ...

Smoke from wildfires blazing across Canada is once again wafting over huge portions of the U.S. Midwest and worsening air ...

The Midwest saw some of the worst air quality conditions in the world Thursday, and similar conditions are expected to persist for several days.

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

Heavy surface smoke from wildfires in Canada is drifting across Minnesota on Monday, with unhealthy air quality levels ...

With hundreds of wildfires burning across Canada, smoke has drifted into the northern United States, lowering air quality ...

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

Hundreds of wildfires still burning in Canada are expected to undermine air quality across the Upper Midwest and Northeast into Tuesday.

Wildfire smoke from Canada and the West Coast is impacting air quality across the U.S., including right here in Virginia.

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