|The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for nearly all of Minnesota, except the North Shore.
The alert takes effect today (Wednesday), beginning at 10 p.m., and runs until Friday at 3 p.m.
The affected area includes Detroit Lakes, International Falls, Duluth, St Cloud, the Twin Cities, Marshall, Rochester, and the tribal nations of Fond du Lac, Upper Sioux, Leech Lake, Red Lake, Mille Lacs, and Prairie Island.
Northerly winds behind a cold front will bring smoke from wildfires located north of the Canadian border in Ontario and Manitoba into Minnesota. Heavy smoke is expected to arrive around 10 p.m. tonight near the Canadian border and mid-morning on Thursday in central and southern Minnesota. Smoke will remain over the area into Friday.
During this time, fine particle levels are expected to be in the Orange AQI category, a level that is considered unhealthy for sensitive groups. Fine particle levels will begin to improve Friday morning as southerly winds start moving the smoke out of the state. By Friday afternoon, air quality should improve below alert levels statewide.
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