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

Canada is experiencing a terrible wildfire season with nearly 4,000 wildfires so far this year, close to a record pace.

However, Lake, Porter, Newton and Jasper counties in Indiana will be under another air quality alert all day Tuesday. The ...

The Wisconsin Department of Natural Resources re-extended its air quality alert statewide as wildfire smoke lingers.

Smoke from ongoing wildfires in Canada is impacting the air quality in states across the Midwest and Northeast 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.

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

An air quality alert has been issued Aug. 4 for the New York Metro area following widespread wildfires in Canada.

Parts of the Midwest and Northeast are experiencing poor air quality Monday as smoke from Canadian wildfires drifts into the U.S. The National Oceanic and Atmospheric Administration (NOAA) said ...

Smoke from Canadian wildfires continues to affect air quality across the Midwest, though Monday’s conditions were an ...