Every air quality monitor in Minnesota is reporting red or unhealthy conditions for everyone, an official said.

Smoke from widespread wildfires in Canada prompted air quality alerts across several Midwest and Northeast U.S. states this week.

Last week, Canadian wildfire smoke blanketed Wisconsin and caused the Air Quality Index to reach the unhealthy level for sensitive groups. Six days later, on July 31, the smoke appears to have a worse impact on the air.