A heat advisory is in effect for Metro Detroit today. Accu-Weather says heat index values of 95 to 100 degrees are expected this afternoon. Overnight temperatures will only fall into the middle to upper 70s, providing little relief from the heat.

A heat advisory means that the combination of hot temperatures and high humidity will combine to create a situation in which heat illnesses are likely.

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The hot and steamy temperatures are not stopping joggers, bicyclers and walkers around Detroit.

Craig Davis, of Detroit, put on headphones and got six-mile run in at Palmer Park in Detroit.

“I’m a diabetic, so I try to keep in shape as much as I can,” Davis said.  “It’s hot, but I like it.”

He said a lot of folks have overindulged during the holiday weekend and may have put on a few pounds and it’s a good idea to work them off.

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Meanwhile, a big part of the Eastern U.S. is bracing for really hot weather.

Forecasters say a high pressure system strengthening over much of the Eastern Seaboard today will produce daytime highs well above normal levels.

Washington forecasts call for temperatures near 100 degrees all week. Ditto for New Jersey and New York City. Temperatures at or near the 90 degree level are forecast for other areas of the East while overnight lows will only get down to the 70s.

The National Weather Service has already issued an excessive heat watch in New Jersey. Residents are being urged to drink lots of water and avoid prolonged exposure to the sun and the heat, especially those with respiratory issues.

New York City will open cooling centers in public buildings that have air conditioning from Monday to Thursday.

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