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 ...

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 ...

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

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

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

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

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