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WHAT: Dangerously hot conditions with daily heat index values around 105 degrees expected.
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WHERE: Central, south central, southwest, and west central Michigan.
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WHEN: Until 8 PM EDT Thursday.
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IMPACTS: Heat related illnesses increase significantly during extreme heat and high humidity events.
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ADDITIONAL DETAILS: Several days in a row of hot temperatures with little relief from overnight low temperatures can increase heat stress on the human body.
* WHAT...Dangerously hot conditions with daily heat index values around 105 degrees expected. * WHERE...Central, south central, southwest, and west central Michigan. * WHEN...Until 8 PM EDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...Several days in a row of hot temperatures with little relief from overnight low temperatures can increase heat stress on the human body.
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke.
The Michigan Department of Environment, Great Lakes, and Energy (EGLE) has declared an Air Quality Advisory for June 30, 2026, for elevated levels of ozone in west and southwest Michigan. Pollutants within those areas are expected to be in the Unhealthy for Sensitive Groups range. The Air Quality Alert is in effect for the following Michigan counties: Muskegon, Ottawa, Kent, Allegan, Van Buren, and Berrien. Warm temperatures, ample sunlight, and southwest winds will mix with pollutants to produce surface-level ozone in west and southwest Michigan. It is recommended that, when possible, you avoid strenuous outdoor activities, especially those with heart disease respiratory conditions like asthma. Watch for symptoms including wheezing, coughing, chest tightness, dizziness, or burning in nose, throat, or eyes. 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, delaying or combining errands. For up-to-date air quality data for Michigan, visit the MiAir site: Michigan.gov/MiAir For up-to-date air quality data nationally, visit EPA's Air Now site: AirNow.gov
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