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

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

Dry conditions in Canada start a chain of events that exacerbates wildfires, injects plumes of smoke in the air and affects air quality in Milwaukee.

Canadian wildfires continue to burn. Weather patterns will carry the smoke into Wisconsin this week. This could be unhealthy for sensitive groups. MILWAUKEE - As wildfires roar in Canada, the ...

The U.S. has one of the world’s most advanced systems to monitor air pollutants. Can it keep up with a changing climate?

Canadian wildfires continue to burn. Weather patterns will carry the smoke into Wisconsin this week. This could be unhealthy for sensitive groups. MILWAUKEE - As wildfires roar in Canada, the ...

While Canada is busy fighting fires, residents of the U.S. Midwest — especially in Minnesota, Wisconsin and Michigan — are being forced to contend with the thick smoke.

Wildfires scorching several Canadian provinces have driven at least 33,400 people from their homes, with smoke now reaching ...

An air quality advisory has been issued for the northern half of Wisconsin as Canadian wildfire smoke has mixed down the the surface, according to the Department of Natural Resources. The advisory ...