The MPCA says that sensitive groups should avoid prolonged or heavy exertion, and everyone should limit their time spent outdoors.

At the Minnesota Pollution Control Agency (MPCA), most of Minnesota was classified as having “moderate” air quality late Sunday morning, with areas around Marshall, Moorhead and Hibbing being a potential risk for people with breathing sensitivity. An air quality alert for Minnesota through Monday issued by the MPCA remains in effect.

Wildfire smoke pouring into the state from Canadian fires has triggered a red air quality alert, signaling that the air is unhealthy for anyone and everyone to breath. The alert, issued by the Minnesota Pollution Control Agency, is in effect until 5 p.m. Saturday, Aug. 2, for large portions of the state, including the Minneapolis-St. Paul area.