Grand Rapids, Mich. – Outdoor activities may be risky this weekend across southwest and west Michigan, as an air quality advisory remains in effect through Sunday evening due to high ozone levels.
According to the Michigan Department of Environment, Great Lakes, and Energy (EGLE), ozone concentrations are expected to reach the “Unhealthy for Sensitive Groups” range on Saturday and Sunday, June 21–22. The advisory affects Berrien, Cass, Muskegon, Ottawa, Kent, Allegan, and Van Buren counties — including cities like Grand Rapids, Benton Harbor, St. Joseph, and Holland.
With surface temperatures soaring into the 90s and abundant sunshine, southwest winds are creating ideal conditions for ground-level ozone to form along the Lake Michigan shoreline. Sensitive individuals, especially those with asthma or respiratory conditions, are urged to limit outdoor exertion.
Residents are asked to help reduce emissions by delaying errands, avoiding gas-powered lawn tools, and skipping vehicle refueling during peak hours. Alternatives like telecommuting, walking, or using water-based paints can help curb ozone formation.
This marks one of the season’s most widespread ozone alerts, with similar conditions seen during July 2021. Updates will be posted on airnow.gov and MiAir.
