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Long Island weather: Humid day will feel like 100 degrees or more

The high temperature will be close to 90

The high temperature will be close to 90 degrees Tuesday for most of Long Island, but will be several degrees lower in southeastern Suffolk County, the National Weather Service said. Credit: News 12 Long Island

A steamy day is in the picture Tuesday for Long Island as the combination of heat and humidity is making it feel more like 100 degrees-plus in some places, forecasters said.

At noon Long Island MacArthur Airport in Ronkonkoma was reporting a temperature of 90 degrees, feeling more like 103 with the humidity, the weather service said. Hempstead was 90, feeling like 100; Wantagh was 86, feeling like 95; and Southold was 90, feeling like 100. 

High temperatures will be in the low 90s and a heat advisory is in effect from late Tuesday morning through Wednesday night for both Nassau and Suffolk counties, the National Weather Service said.

The hottest areas Tuesday will be along the North Shore, where it might feel like 105 degrees, News 12 Long Island meteorologist Pat Cavlin said. “We are talking about some really hot weather as we go through the next two days,” Cavlin said.

The heat will also cause elevated levels of pollution, leading the state to issue an air quality alert from 11 a.m. to 11 p.m. Tuesday and to advise the elderly and at-risk people to be careful.

It will be dry Tuesday and Wednesday and a bit of relief from the heat could come Thursday with a chance of showers and thunderstorms and temperatures topping out in the upper 80s, the weather service said.

There is a chance of wet weather again Friday and the high temperature will be in the mid-70s, the weather service said.

With Patricia Kitchen

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