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

The hazy air hovering over US cities, including Chicago and New York, this summer is reminding Americans of just how ...

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 produced by hundreds of wildfires burning across Canada has drifted thousands of miles and nearly circled the entire ...

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

An air quality alert will be in effect across the state of Minnesota today until 9 am as thick wildfire smoke once again lingers at the surface, coming from the fires in Canada. Gradual improvements ...

House Republicans Elise Stefanik and Nick Langworthy questioned Canada's commitment to wildfire prevention in a letter to Prime Minister Mark Carney.

But a growing body of research is reinforcing the knowledge that wildfire smoke is much more than an inconvenience — in fact, ...

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

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

As Canada’s wildfire smoke creeps down into the U.S., it’s also transforming. Chemical reactions between gases and sunlight create ozone, which further exacerbates lung conditions like asthma.