NYC Weather: 'Intense' 100-Degree Heat Index Will Hit City

NEW YORK CITY — Labor Day may have passed, but late-summer heat isn't over in New York City.

The city is under a two-day heat advisory starting Tuesday at 11 a.m. that warns of heat indices up to 100 degrees, according to the National Weather Service.

The advisory ends Wednesday at 8 p.m., but forecasters warned it could be extended.

The potentially deadly heat prompted city officials to open cooling centers across the city.

"As these final summer days bring intense heat, I urge all New Yorkers to follow public health guidance and look out for one another," said Zach Iscol, the city's emergency management commissioner.

"This weather puts our elderly, children, and anyone with chronic health conditions at increased risk and it's important we all take measures to protect ourselves and our loved ones."

Cooling centers can be found by calling 311 or visiting the City’s Cooling Center Finder.

Here's the National Weather Service's forecast.

Tuesday
Mostly sunny, with a high near 89. North wind around 6 mph becoming west in the afternoon.

Tuesday Night
Partly cloudy, with a low around 77. South wind around 6 mph becoming light and variable.

Wednesday
Sunny, with a high near 91. North wind 5 to 7 mph.

Wednesday Night
Mostly clear, with a low around 77. Southwest wind around 6 mph.

Thursday
Mostly sunny, with a high near 89. Light and variable wind becoming south 5 to 10 mph in the morning.

Thursday Night
Mostly cloudy, with a low around 74.

Friday
A 30 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85.

Friday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 73. Chance of precipitation is 40%.

Saturday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 81. Chance of precipitation is 60%.

Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 71. Chance of precipitation is 50%.

Sunday
A 40 percent chance of showers. Mostly cloudy, with a high near 79.

Sunday Night
Mostly cloudy, with a low around 68.

Monday
Mostly sunny, with a high near 78.