Some of the worst air quality will be right along Lake Michigan, as the majority of the Chicago metro area will be under that alert. The farthest counties like DeKalb, LaSalle, and Kankakee counties were in the clear as of Sunday. Forecast temperatures are expected to reach around 80 degrees for much of the Chicago area on Sunday.

On Monday at 3:01 p.m. EDT the National Weather Service reported an air quality alert in effect until Tuesday at 11:45 p.m. EDT for Emmet, Cheboygan, Presque Isle, Leelanau, Antrim, Otsego, Montmorency,