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

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

Smoke from hundreds of wildfires in Canada is lingering over the northern U.S., spreading across to roughly a dozen states ...

Having breathing trouble today? Canadian wildfire smoke is drifting across Ohio today, dropping the air quality in parts of ...

Smoke from Canadian wildfires is causing air quality concerns for millions of Americans in the Midwest and Northeast.

A stretch of southern Ontario remains under a special air quality statement today amid smoke from wildfires burning in parts ...

As smoke begins to dissipate, Michigan's statewide advisories have ended, though some remain for Upper Peninsula and northern ...

An air quality warning is in effect as smoke from wildfires in Manitoba and Saskatchewan blankets much of Nunavut’s Kivalliq ...

Blazes burning across Canada are sending air quality plummeting in Detroit, Chicago, New York and other major U.S. cities ...

Wildfire smoke from the Prairies prompted special air quality statements and warnings across the country Saturday.

Environment Canada says the smoke is causing or expected to cause poor air quality and reduced visibility that can fluctuate and vary hour by hour.

The air quality in several U.S. states is taking a hit as smoke floats over the border from the Canadian wildfires. Here's what to know.