Smoke from ongoing Canadian wildfires has led to some of the worst air quality in the world across parts of the U.S.

Millions of people were told to monitor themselves for the symptoms at least through Monday night, but possibly longer.

More than 739 fires are burning in Canada, and smoke crossing the border has triggered air quality alerts in several U.S.

Smoke from Canadian wildfires is impacting Greater Akron. The hazy conditions are impacting the air quality in ...

An Air Quality Action Day (AQAD) has been issued for Tuesday in several northern Indiana cities as Canadian wildfire smoke ...

MADISON, Wis. (WEAU) - The Wisconsin Department of Natural Resources is issuing an air quality advisory statewide. The advisory goes into effect Monday, August 4 - Noon and ends Tuesday, August 5 – ...

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

New York and other neighboring states are under an air-quality advisory due to influx of smoke from ongoing wildfires in ...

The Canadian wildfires are impacting the air quality in Erie, which is in the orange level. Here's what you should know before going outside.

Air quality alerts were in effect in Iowa, Minnesota, Wisconsin and Michigan, as well as eastern Nebraska and parts of ...

Rhode Island is expected to experience poor air quality throughout the day Monday due to Canadian wildfire smoke, according ...