Smoke from Canadian wildfires is leading to very unhealthy air quality for much of Michigan, including all of Southeast Michigan. An air quality alert is in effect for all of Southeast Michigan until noon on Friday.

An air quality alert was reported by the National Weather Service on Friday at 11:55 a.m. EDT in effect until Saturday at midnight EDT for St. Clair, Oakland, Macomb, Washtenaw, Wayne, Lenawee and Monroe counties.

The Michigan Air Quality Division said as smoke from Canadian wildfires continues to threaten the upper Midwest, "monitors in the western (Upper Peninsula) showed a large increase surface concentrations, during Tuesday, as smoke mixed down, which sent PM-2.5 concentrations soaring into the Unhealthy and higher range."