Extreme Heat Warning

Locations Affected

Detroit, MI ∙ Sterling Heights, MI ∙ Warren, MI ∙ Flint, MI ∙ Ann Arbor, MI ∙ Westland, MI ∙ Livonia, MI ∙ Troy, MI ∙ Farmington Hills, MI ∙ Dearborn, MI

Full Alert Message

URGENT - WEATHER MESSAGE National Weather Service Detroit/Pontiac MI 305 AM EDT Tue Jun 30 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM NOON TODAY TO 8 PM EDT THURSDAY... * WHAT...Dangerously hot conditions with heat index exceeding 105 to near 110 degrees expected. * WHERE...All of southeast Michigan. * WHEN...From noon today to 8 PM EDT Thursday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...An extended period of hot and humid conditions begins Tuesday afternoon and peaks Wednesday through at least Thursday. High temperatures reach the mid 90s to near 100 degrees and combine with high humidity to result in heat index of 105 degrees or greater each day. Little relief occurs at night as low temperatures only fall into the mid and upper 70s with nighttime heat index around 80. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Monitor the latest forecasts and warnings for updates. Check with local emergency management officials for information on cooling center availability.

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