Smoke traveling from wildfires in Canada, North Dakota and Minnesota triggered an air quality warning in northern Wisconsin.

An air quality advisory has been issued for the northern half of Wisconsin as Canadian wildfire smoke has mixed down the the ...

The advisory began at 5 p.m. Wednesday and is scheduled to expire at noon Thursday, although it could be extended.

Maps show where new plumes of smoke will cause hazy skies through the end of the week. Low-level smoke is forecast to spread ...

An upper-level low pressure system will draw south another thick plume of smoke from Canada. This will create another round ...

Despite Sunday night's rain, Canadian wildfire smoke will continue to impact Michigan on Monday, officials say.

Wildfire smoke is choking Wisconsin for a third straight spring. The hazy, dirty air from Canada — “some of the highest ...

Wildfires have forced another 1,000 people to flee their homes in the Canadian province of Manitoba, which is under a state ...

An air quality map shows conditions improving in the U.S. on Friday as smoke from the Canadian wildfires subsides.

As wildfire smoke prompts emergency evacuations across the country, travelling smoke has issued weather alerts in Ontario and Québec.

Smoke from wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia and Europe during the past week.

More than 200 wildfires are raging across Canada, sending a thick blanket of choking smoke through the U.S. Midwest. Experts ...