GRAND RAPIDS, MI – Grand Rapids-area residents have been keeping a close watch on the Air Quality Index since Tuesday morning when some of the worst air quality in the nation hit the area.

MIchigan's air quality will be unhealthy for some groups Saturday. Check the air quality index map to see if it's good or bad ...

GRAND RAPIDS, Mich. — As of 9 a.m. Tuesday, Grand Rapids registers as the city with the worst air quality in the United States. This puts the area in a 'Very Unhealthy' category, meaning people ...

Pollen and Air Quality forecast for Grand Rapids, MI with air quality index, pollutants, pollen count and pollution map from Weather Underground.

The Air Quality Index in Grand Rapids was 397, which is enough to be hazardous. Storm Team 8 forecast The AQI is a measure of particles in the atmosphere, measuring smoke, dust and ozone levels.

Grand Rapids has some of the worst air quality in the nation, according to an annual study by the American Lung Association. Each year, the Lung Association releases a "State of the Air" report ...

Smoke from Canadian wildfires triggers air quality alerts in northern Michigan and the Upper Peninsula. Residents, especially sensitive groups, are urged to stay indoors and limit outdoor activities.

As of 9 a.m. on June 11, here are air quality index readings in Michigan cities, according to AirNow's Air Quality Index: Grand Rapids: PM2.5 of 87; moderate. Marquette: PM2.5 of 86; moderate.

The worst air will be in some West Michigan counties — Allegan, Berrien, Cass, Kent, Muskegon, Ottawa and Van Buren — where the air quality is expected to reach Unhealthy for Sensitive Groups.

The Air Quality Index in Grand Rapids was 397, which is enough to be hazardous. Storm Team 8 forecast . The AQI is a measure of particles in the atmosphere, measuring smoke, dust and ozone levels.