MPCA extends alert as new band of Canadian wildfire smoke to moves in

Tuesday, Aug. 12, brought some relief of Canadian wildfire smoke across much of Minnesota, but a new band is expected to move in across the northern region.

Northwest winds will bring another narrow band of ground-level smoke from wildfires in Canada into Northern Minnesota, prompting the Minnesota Pollution Control Agency to extend its air quality alert through 11 p.m. Wednesday. Smoke will reach as far south as Detroit Lakes, Brainerd and Hinckley by the end of the day on Tuesday.

High pressure will move into the region on Wednesday and winds will become light. Ground-level smoke will stall and continue to impact the northern one-third of the state on Wednesday, the MPCA stated. The smoke should begin to disperse and air quality should improve by Wednesday evening.

Fine particle levels are expected to reach the orange air quality index category, a level considered unhealthy for sensitive groups, across Northern Minnesota. In the orange area, sensitive groups should limit prolonged or heavy exertion and time spent outdoors.