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 ...

Smoke will clear northwest Minnesota early Tuesday morning and air quality will begin to improve from northwest to southeast ...

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

The Pollution Control Agency has issued a statewide air quality alert, including all tribal nations, that will be in effect ...

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

Smoke from wildfires in Canada has spread more than 5,000 miles, reaching parts of Russia as well as other parts of Europe ...

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

The Minnesota Pollution Control Agency (MPCA) issued an air quality alert starting at 1 p.m. Thursday, extending to 7 p.m.

Tracking how that smoke will move from Canada, or when it's going to cause problems at the surface, isn't easy.

The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for areas in northern Minnesota.

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