Air Quality Alert issued June 10 at 10:55AM EDT by NWS Grand Rapids MI

The Michigan Department of Environment, Great Lakes, and Energy
(EGLE) has declared an Air Quality Advisory for June 11, 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 west Michigan
counties:

Allegan, Kent, Muskegon, Ottawa, and Van Buren

Surface temperatures well into the 80s, ample sunlight, and
west-southwest winds will create a conducive environment for Ozone
development along the Lake Michigan shoreline. Residual wildfire smoke
in the region may also enhance Ozone development over Lake Michigan.

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/