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Long Island weather: Hot, muggy on Sunday; more to come this week

Prepare for more hot, humid and uncomfortable weather, meteorologists said.

With temperatures expected to feel up to 100 degrees with humidity, a heat advisory will be in effect in Nassau County and New York City through Tuesday in the afternoon and evening hours, according to the National Weather Service. 

The weather service also issued an air quality alert for 11 a.m. to 11 p.m. Monday. Temperatures will feel in the mid- to upper 90s in Suffolk County and a little cooler near the coastline, said Jay Engle, meteorologist for the weather service in Upton.

“There’s a reason they call it the dog days of summer,” Engle said. “When you get into August, this isn’t that unusual.”

Forecasters advised that people watch out for senior citizens and children, who can be especially vulnerable to the heat. People should drink plenty of fluids, limit their exposure to the outdoors and direct sunlight and take it easy if they're outside, they said.

In addition, due to the heavy rains on Saturday, the Nassau County Health Department had issued an advisory against bathing at several North Shore beaches Sunday. Storm-water runoff can impact bathing water quality by elevating bacteria levels above the state standard for bathing water quality. The advisory was lifted at noon Sunday.

Monday features another scorcher, according to the National Weather Service's Upton office — another sunny day, temperatures around 90, but the heat index will make it feel as high as 97, the office said.

Tuesday will also bring the heat, with a slight chance of showers, according to the weather service.

The middle of the week will feature some rain, coming in on Wednesday. The temperature on Wednesday will be about 85 degrees, the weather service said. Overnight, the temperatures will drop into the mid-70s.

Ditto for Thursday.

By the end of the week, the sun will reappear with slightly milder temperatures.


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