Long Island weather: Air quality alert, heat advisory for Nassau

Conditions Thursday were mostly sunny and hot on Long Island, with temperatures reaching 90 degrees in some areas, forecasters said.

Long Island MacArthur Airport hit 90 at around 2:30 p.m., tying the record for the day. An automated weather station at Hofstra University recorded 90 degrees shortly before 3 p.m., and it felt more like 96 with the humidity factored in.

A heat advisory is in effect for Nassau County, where the temperature hit 90 degrees for the second straight day, the National Weather Service said.

Suffolk County did not meet the temperature and humidity requirements for a heat advisory.

"We have beautiful weather out there today, but it is going to be hot and it is going to be muggy," News 12 Long Island meteorologist Pat Cavlin said earlier Thursday.

State officials have issued an air quality alert for Thursday for all of Long Island until 11 p.m. because elevated pollution levels could pose a health problem for seniors and other at-risk people.

It will be partly sunny Friday with a high in the mid-80s, but there is a chance of showers and thunderstorms in the afternoon, the weather service said.

The heat advisory will be in effect until 6 p.m. Friday for Nassau, the weather service said.

It will be mostly cloudy Saturday with a chance of showers and thunderstorms, but Sunday should be dry and partly sunny, the weather service said. Temperatures both weekend days will reach a high in the upper 70s to mid-80s.