Air quality is expected to reach the orange AQI category across all of Minnesota, which is unhealthy for sensitive groups.
The Minnesota Pollution Control Agency (MPCA) has issued an air quality alert for all of Minnesota due to wildfire smoke. The alert is effective from 8 a.m. Friday, July 14, through 3 p.m. Saturday, July 15. The affected area includes all of Minnesota as well as the tribal nations of Prairie Island, Mille Lacs, Fond du Lac, Upper Sioux, Leech Lake, Red Lake and Grand Portage.
Fine particle levels are expected to reach the orange air quality index (AQI) category, a level considered unhealthy for sensitive groups, all of Minnesota. In the orange area, sensitive groups should limit prolonged or heavy exertion and time spent outdoors.
Smoke from wildfires in Alberta and British Columbia will move south across Minnesota following a cold front on Friday. The sinking air associated with the cold front will push smoke elevated in the atmosphere down to the surface. This will result in poor air quality. Air quality will gradually improve on Saturday with gradual clearing across Minnesota from north to south. This alert may need to be locally extended depending on how fast the smoke dissipates.