Beachgoers flock to Jones Beach State Park on July 19, 2020. Photo by Mira Lerner.

Another heat wave is forecast for Long Island as temperatures are expected to be above 90 degrees this weekend through Tuesday, experts say.

The National Weather Service issued a heat advisory for Nassau County and western Suffolk County from noon Sunday to 8 p.m. Monday.

“I want to urge residents – especially seniors and parents of young children – to take extra precautions during this potentially dangerous stretch of heat,” said Nassau County Executive Laura Curran, who opened the county’s cooling centers Saturday through Wednesday for anyone who needs to cool down in the air-conditioning. 

New York City and parts of New Jersey are included in the advisory, which comes a week after LI saw its first heat wave of summer. The region is also under an air quality alert due to elevated pollution levels.

“Heat index values 95 [to] 100 expected,” Upton-based NWS meteorologists said in the heat advisory. “Hot temperatures and high humidity may cause heat illnesses to occur.”

The agency urged the public to drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances, NWS added.

Anyone who works or has to spend time outside should take extra precautions, reschedule strenuous activities to early morning or evening if possible, and scheduling frequent rest breaks in shaded or air conditioned environments if it’s not possible. NWS advised wearing lightweight and loose-fitting clothing when possible. 

Anyone who shows symptoms of heat exhaustion and heat stroke should be moved to a cool and shaded location and call 911.

The forecast is calling for mostly sunny to partly cloudy skies with temps in the 80s for the rest of the week.

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