Grand Rapids, Michigan – Ozone pollution and high humidity will blanket much of western Michigan Saturday, creating hazardous air and swimming conditions as temperatures spike into the 90s.
According to the Michigan Department of Environment, Great Lakes, and Energy (EGLE), an Air Quality Advisory remains in effect through Saturday evening for Kent, Ottawa, Muskegon, Allegan, and Van Buren counties, warning that ground-level ozone could reach levels unhealthy for sensitive groups. Residents with asthma or other respiratory conditions are urged to limit outdoor activity and avoid refueling vehicles or using gas-powered lawn equipment until air quality improves.
Meanwhile, the National Weather Service in Grand Rapids expects temperatures in the low to mid-90s Saturday, with a heat index approaching 95°F. A 30% chance of thunderstorms is possible by Saturday afternoon, particularly east of U.S.-131. While storms may remain scattered, lightning remains a serious threat.
For those heading to the lakeshore, moderate to high swim risks are expected both Saturday and Sunday due to strong currents. Swimmers are advised to use caution and check beach warnings before entering the water.
Looking ahead, Sunday brings a 40% chance of storms, followed by mostly sunny and hot days through midweek. By Tuesday, Grand Rapids is expected to hit 90°F again, capping a stretch of oppressive heat that may strain local cooling systems.
📅 Five-Day Forecast: Grand Rapids, MI
- Saturday [July 5]: Partly sunny, 93°F, chance of afternoon storms
- Sunday [July 6]: 86°F, 40% chance of storms, humid
- Monday [July 7]: Mostly sunny, high of 86°F
- Tuesday [July 8]: Sunny and hot, near 90°F
- Wednesday [July 9]: Mostly sunny, high near 86°F
