The EPA's Air Quality Index can tell you whether breathing outside air can be harmful. Here's how to read the scale to plan accordingly in Michigan.

DETROIT – It’s shaping up to be a Toasty Tuesday. Today will likely be the warmest day of the week as highs top out around 90, but humidity still stays on the lower side under hazy skies. The wildfire smoke from Central Canada lingers across Michigan which extended the Air Quality Alert for Southeast Michigan through tonight.

An updated air quality alert was reported by the National Weather Service on Tuesday at 4:13 a.m. EDT in effect until Wednesday at EDT for St. Clair, Livingston, Oakland, Macomb, Washtenaw, Wayne and Monroe counties.

The Michigan Department of Environment, Great Lakes, and Energy issued an Air Quality Advisory for five West Michigan counties through Saturday.

The Michigan Department of Environment, Great Lakes, and Energy expects particle pollution to reach the Unhealthy for Sensitive Groups level.

Officials have issued an air quality alert for around 10 million Americans, telling them to minimize outdoor activities and shut all windows on Tuesday. A National Weather Service (NWS) map shows parts of Minnesota, Michigan, Illinois, New York ...