This morning, Detroit woke up under mostly cloudy skies and about 79°F at Coleman A. Young Municipal Airport. Relief is not in the cards: a dangerous heat event moves in today and will stretch through the holiday period, making afternoons hazardous for anyone without reliable cooling. If you have outdoor plans or work outside, expect extreme heat during the warmest hours and plan accordingly.
When And How Hot
An Extreme Heat Warning is in effect from noon today through 8 p.m. Thursday with afternoon heat indices topping 105–111°F, which is dangerously hot for extended outdoor exposure, according to the National Weather Service Detroit. Highs will climb into the upper 90s on Tuesday and peak near 100–101°F on Wednesday and Thursday. Southwest winds of 6–15 mph with gusts into the 20s will keep the air moving but will not provide meaningful relief from the heat.
Nighttime Relief Will Be Limited
Overnight lows are expected to fall only into the mid-to-upper 70s, so the region will see little cooling at night and indoor air conditioning is likely to be essential for safe rest. Nighttime heat indices near 80°F may make sleeping uncomfortable for many residents. Modest gusts overnight could offer brief relief outside, but the overall risk remains high.
Air Quality And Health
The Michigan Department of Environment, Great Lakes, and Energy has issued an Air Quality Alert for elevated ozone across much of southeast Michigan, so avoid strenuous outdoor activity if you have asthma or heart disease, per EGLE. Combined heat and poorer air quality increase the risk of heat- and respiratory-related illness, especially for older adults, children, and outdoor workers. If you feel dizzy, weak, or short of breath, move to a cool place and seek medical attention if symptoms worsen.
Where To Cool Off
Detroit typically opens city recreation centers and most Detroit Public Library branches as cooling locations during heat events; confirm hours before you go or call 2-1-1 for help. For a local roundup and practical tips on cooling options, see this local cooling-center rundown.
Quick Safety Tips
Drink plenty of water, limit outdoor work between about 11 a.m. and 7 p.m., wear lightweight clothing, and take frequent breaks in air-conditioned spaces. Never leave children or pets in parked cars, and check on elderly neighbors. Employers should provide frequent rest breaks and shaded or air-conditioned recovery periods for outdoor workers. If you experience headaches, nausea, confusion, or loss of consciousness, seek emergency care immediately.
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