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

Canadian wildfire smoke has become so intense that even young, healthy Minnesotans are experiencing symptoms similar to ...

An air quality index of 300 or higher is considered hazardous, and the record-breaking smoke AQI in Grand Portage reached 800 ...

The ongoing Canadian wildfires have reportedly blanketed a third of the United States, affecting millions, with the National ...

The U.S. Environmental Protection Agency warns that wildfire smoke contains dangerous pollutants in the form of fine ...

Canada is having another bad wildfire season, and more than 27,000 people in three provinces have been forced to evacuate.

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

Smoke from Canadian wildfires is beginning to worsen air quality in the eastern U.S. as several Midwestern states battle ...

From Sunday to Tuesday, smoke in northwest Canada swirled into the northern Plains, giving Minnesota some of the worst air ...

The smell of fire filled the air as thick smoke from wildfires in Canada blanketed part of the Midwest and created hazardous ...

Air quality alerts remain in effect for yet another day for the entire state of Minnesota with concentrations of wildfire ...

The Minnesota Pollution Control Agency issued an air quality alert for much of state through Wednesday as smoke from ...