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The National Weather Service has issued an excessive heat warning until midnight Saturday for Metro Detroit and urges people to stay cool and well-hydrated. 

Temperatures are expected to reach 95 degrees or higher from 2 to 8 p.m. Saturday, making it feel about 105 degrees, according to the weather services' heat index. 

On a very hot day, new record high minimum temperatures were set at all Michigan climate sites Saturday morning, said Trent Frey, a meteorologist with the National Weather Service in White Lake Township. 

More: 7 ways to protect your dog from heat stroke and hyperthermia

Detroit's low Saturday morning was 76 degrees, breaking the record of 75 set in 1927. Flint was 76 degrees, breaking the record of 73 set in 2014 and tri-city's low of 77 degrees Saturday broke their record of 75 degrees set in 1931. 

Frey said Metro Detroit did not break the record high of 96 degrees set in 1931. The record low is 47 degrees set in 1943 and the average temperature for June in Detroit is 79.3 degrees.

An ozone action day advisory issued by the Michigan Department of Environmental Quality will remain in place through Saturday in Livingston, Macomb, Monroe, Oakland, St. Clair, Washtenaw and Wayne counties. 

Because of elevated ozone levels, people in those counties are asked to refrain from refueling vehicles or topping off when refueling, using gasoline-powered lawn equipment and using charcoal lighter fluid. High ozone levels can affect people with respiratory diseases, such as asthma.

Frey said the weather service is expecting to issue a heat advisory for Sunday, when temperatures will reach a high of 94 and feel closer to 100. But the heat, he said, will be tempered by increasing chances for scattered thunderstorms as a cold front approaches the region from the west.

"The best chance for some showers will be late Sunday into early Monday, but that's still only a 30 to 40 percent chance," Frey said. 

Frey said tempuratures will hover around 90 degrees next week with a sign of relief next weekend. 

"It's going to be a warm and humid next week as well. Monday's high's are looking around 90 and hover around there the next of the week," he said. "It'll feel a little cooler than Saturday, but we're still expected to see a high around 94 degrees on Wednesday."

The city of Detroit opened six recreation centers Saturday and Sunday to give residents relief from the extreme heat. The cooling centers: Williams Recreation Center, Coleman A. Young Recreation Center, Farewell Recreation Center, Crowell Recreation Center and Northwest Activities Center are open noon to 8 p.m. 

According to SYNERGY HomeCare, a local senior assisted living company, heat when combined with certain medications can be dangerous for seniors. Seniors who take antidepressants, antihistamines, beta-blockers, amphetamines, diuretics or sedatives should be cautious with high heat and stay hydrated.

srahal@detroitnews.com

Twitter: @SarahRahal_

Extended forecast

Sunday: Mostly sunny with a high near 94 degrees and a low of about 77 degrees. There's a chance thunderstorms after 3 p.m.

Monday: Partly sunny with a high near 90 degrees and a low of about 73 degrees. There's a chance of thunderstorms before 9 a.m. and another between 3 p.m. and 9 p.m. 

Tuesday: Mostly sunny with a high near 89 degrees and a low of about 74 degrees with thunderstorms expected in the evening.

Wednesday (Independence Day): Mostly sunny with a high near 93 degrees, low of 75 degrees. Thunderstorms overnight. 

Thursday: Partly cloudy with possible thunderstorms in the afternoon. High of 92 expected and low of 74 degrees. 

Source: National Weather Service

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