GRR with a little bit of sarcasm/humor in their afternoon AFD.
Smoke continues to linger across parts of West Michigan, though some
improvement has been noted over central Lower Michigan the past few
hours. As ridge of high pressure moves east of the area tonight,
winds will becomes SE, and this should prevent the somewhat more
pristine air to the north from advancing significantly farther south
through lower Michigan, and as a result forecast will continue to
include areas of smoke through Thursday.