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Heat warning invoked for Southeast Michigan for Tuesday through Thursday

A heat watch that was issued earlier has been upgraded to an extreme heat warning for Southeast Michigan, in effect from noon Tuesday to 8 p.m. Thursday.

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An extreme heat warning notice has been issued for Southeast Michigan, in effect from noon Tuesday through 8 p.m. Thursday. CBS News Detroit

Because of the extreme conditions, the CBS Detroit weather team has declared Monday through Friday to be NEXT Weather Alert days. This means news coverage and forecasts will be stepping up forecasts and announcements as needed.    

Highs expected to reach in the mid- to upper 90s to 100 degrees and heat indices in excess of 105 degrees each day. There will be little relief at night with lows only dropping to the mid 70s. 

This week's weather in Metro Detroit is part of a heat wave that will affect much of the eastern United States.  

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Heat index forecast for Metro Detroit during the week of June 29, 2026. CBS News Detroit

An air quality alert also has been issued for Monday in Southeast Michigan, with a separate air quality alert issued for Tuesday for part of West Michigan. The reason for the air quality alerts is ozone formation in the atmosphere, state environment officials said.

The hot and humid conditions will extend into the holiday weekend, with also will have the added potential for showers and thunderstorms.

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Metro Detroit's 7-day temperature forecast for the week of June 29, 2026. CBS News Detroit

The National Weather Service issued the update to a heat warning on Monday afternoon because of the extended period of hot and humid temperatures, with little relief at night.

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Heat advisory vs. extreme heat warning. CBS News Detroit

Several Metro Detroit communities say they will provide cooling center services this week for those who need to seek out air conditioning.

If you must spend time outdoors, wear loose, light-colored clothing, take plenty of breaks in shade and air-conditioning and stay hydrated.

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Heat safety tips. CBS News Detroit

Once the air temperature hits 90 degrees, the internal temperature of asphalt can rise rapidly: in 10 minutes, it can reach 109 degrees; in 60 minutes, it can reach 133 degrees and it will continue to climb to over 150 degrees.

If skin touches asphalt that is over 120 degrees, it can show signs of thermal injury or severe blistering in just 60 seconds. A dog's paw pads are highly sensitive and will easily sustain devastating burns on hot streets or sidewalks. Experts recommend placing the back of your hand directly on the pavement for seven to 10 seconds. If it is too hot for your skin, it is too hot for bare feet or a dog's paws.

Energy-saving tips, according to DTE

DTE says high temperatures can result in a higher energy bill. The utility company says the following tips can reduce energy usage:

  • Cook meals with a microwave, crockpot or outdoor grill instead of your oven.
  • Postpone doing laundry, washing dishes or running the dishwasher until the evening. 
  • Let dishes air dry in the dishwasher instead of using the heated drying feature.
  • Close curtains and shades on sun-facing windows to keep the head out of your home.
  • Turn off fans when you leave a room.
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