Air Quality Alert issued June 20 at 11:04AM EDT by NWS Grand Rapids MI

Air Quality Advisory for Saturday June 21, 2025

The Michigan Department of Environment, Great Lakes, and Energy
(EGLE) has declared an Air Quality Advisory for June 21, 2025, for
elevated levels of ozone in southwestern counties of Michigan.

Pollutants within those areas are expected to be in the Unhealthy for
Sensitive Groups (USG, Orange AQI) range.

The Air Quality Advisory is in effect for the following Michigan
counties: Allegan, Kent, Muskegon, Ottawa, and Van Buren

We are in the peak of ozone season, and the current forecast shows
ozone- conducive conditions for Saturday. Surface temperatures in the
90s, coupled with ample sunlight and southwest winds, create an
environment favorable for ozone development along the Lake Michigan
shoreline.

It is recommended that, when possible, you avoid strenuous outdoor
activities, especially those with respiratory diseases such as
asthma.

People and businesses are urged to avoid activities which can lead
to ozone formation.

These activities include: refueling vehicles or topping off when
refueling; using gasoline powered lawn equipment; using charcoal
lighter fluid.

Positive activities include:
driving less; telecommuting; walking or bike riding; delaying or
combining errands; using water-based paints.

For up-to-date air quality data for Michigan visit the MiAir site:
https://air-egle.hub.arcgis.com/

For up-to-date air quality data nationally visit EPAs Air Now site:
https://www.airnow.gov/

Air Quality Advisory
Michigan Department of Environment, Great Lakes, and Energy
June 20, 2025