Summer heat will return to the Twin Cities on Monday as air quality concerns linger for parts of Minnesota. The week will start dry and warm, with highs near 90 in the metro. The northern half of the state remains under an air quality alert through 6 p.m. due to Canadian wildfire smoke, the National Weather Service said.

Weekend wildfire smoke produced some of the worst air pollution ever recorded in MN originally appeared on Bring Me The News. The smoke from Canadian wildfires produced some of the worst fine particle pollution on record in Minnesota over the weekend.

The Minnesota Pollution Control Agency released the top hourly fine particle readings from the air quality alert that ran from Friday to Sunday, with the worst reading at 404.9 in Detroit Lakes. That put it 5th on the all-time highest fine particle pollution levels from wildfire smoke ever recorded in Minnesota.

Unhealthy air has invaded Minnesota, Wisconsin and North Dakota early this week as a new round of wildfire smoke from Canada has wafted into the region, choking out areas as far south as Chicago and Detroit.

Multiple U.S. states and Canadian provinces are experiencing poor air quality from wildfire smoke. Here's where.

The Minnesota Pollution Control Agency (MPCA) has extended its air quality alert through Tuesday, July 15, for northern Minnesota. Areas around the Northshore will still be in the level considered unhealthy for everyone.

GOLDEN VALLEY, Minn. — The Minnesota Pollution Control Agency fined General Mills more than $18,000 for violating its air permit. The Golden Valley-based food manufacturer did not file the appropriate reports with the MPCA for five years, according to a release from the agency. General Mills was fined $18,065 for its alleged infractions.

The Pollution Control Agency has issued a statewide air quality alert through 9 a.m. Monday because of Canadian wildfire smoke.