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

Canadian wildfire smoke is triggering air quality alerts across the U.S. Midwest and Northeast on Thursday, as the northern ...

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

Smoke from the Canadian wildfires continues to bring potentially dangerous air quality to parts of the northern U.S., with ...

Canadian wildfire smoke is once again drifting into the United States, affecting air quality across several regions. The lingering haze can pose health risks, especially for people with allergies, ...

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

The Environmental Protection Agency said that particle pollution — consisting of a mixture of solid and liquid droplets in the air — is a major part of wildfire smoke, "and the principal ...

Smoke from Canadian wildfires continues to plague the Upper Midwest and Great Lakes region, with multiple states under air ...

An air quality advisory for Long Island is the result of smoke from Canada wildfires, New York State officials say.

Officials issue an air quality advisory for counties in southwest Michigan as Canadian wildfires burn. Here's what the air ...

The advisory warns that communities along the eastern border of the state will be most affected as upper and lower-level ...