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Buckle up for the second heat wave of the season, Boston.
With anticipated temperatures in the high 90s, Boston has declared a heat emergency beginning Monday and lasting through Wednesday. The city has opened cooling centers at the Boston Centers for Youth and Families from 10:30 a.m. to 6 p.m., and the Boston Common spray pool and tot sprays are open around the city.
“It is going to be dangerously hot so I’m asking everyone to take steps to stay safe over the next few days,” said Acting Mayor Kim Janey in a statement. “Let’s look out for each other, Boston. If you see someone outside who appears in distress and needs help, call 911 right away.”

During the heatwave in early June, Boston EMS saw the daily call volume increase by 30 to 44%, according to data reported by The Boston Globe. Extreme heat can be dangerous by itself and worsen pre-existing health issues, the Boston city website noted, so residents are encouraged to follow heat safety tips.
“Drink plenty of water. Try to avoid strenuous outdoor activity during the middle of the day. And find ways to stay cool,” Janey said. “Anyone who needs a place to beat the heat can come inside and rest in the air conditioning at one of our cooling centers.”
Temperatures are expected to hit as high as 97 degrees in the Boston area, dropping slightly on Wednesday and heading back down to the mid-70s on Friday. Precipitation and possible thunderstorms are also expected beginning Wednesday.
The Heat Advisory has been extended until 7pm Tuesday. The combination of heat and humidity will make it feel over 100. Stay out of the sun and drink plenty of fluids. No relief until the end of the week. #wcvb pic.twitter.com/mIwoBfLRrF
— Mike Wankum (@MetMikeWCVB) June 27, 2021
On Sunday, National Weather Service issued a heat advisory that lasts through Tuesday for most of Southern New England, including parts of the Merrimack Valley, Connecticut, and all the way out to the east Berkshires.

The city of Boston issued the following heat safety tips for the general public.
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