With temperatures across the five boroughs rising into the 90s, and humidity making conditions feel even hotter, the city is once again under a Heat Advisory. 

The National Weather Service issued the alert early Monday morning. It will stay in effect until 8 p.m. Wednesday. 

An Air Quality Health Advisory is also in effect for the city until 11 p.m. on Wednesday. 

It’s not the first time New Yorkers have contended with dangerous heat this summer: Last week, the city experienced its second heat wave of the season. Mayor Eric Adams on Monday morning called on New Yorkers to take the excessive heat seriously. 

“I just want New Yorkers to know, do not underestimate the heat,” Adams said during a press conference at NYC Emergency Management headquarters in Manhattan. “As I’ve said before, a heat wave can be deadly and life-threatening if you are not prepared. But our city is prepared. The entire apparatus is coordinating together, including the MTA and Con Edison and here over at [Office of Emergency Management].” 

“Since June 1, nearly 75% of daily max temps in Central Park were above normal this year alone,” Emergency Management Commissioner Zach Iscol said.

Cooling centers across the city will remain open through at least Tuesday, Adams said. Officials are urging residents without access to air conditioning — especially senior citizens — to utilize the facilities, some of which are pet-friendly. Find one here. 

Erskine Curry, a native of the Bahamas, is now living in Jamaica, Queens. He was not surprised to learn that his neighborhood ranked number five — with five being the highest — on the city’s Heat Vulnerability Index, which measures heat impact on communities from extreme heat events.

Curry and others found refuge from the high temperatures on Monday in the air-conditioned Queens Public Library on Merrick Boulevard Monday.

“Staying indoors. Doing a lot of work on the computer inside and staying out of the heat. Just decided to come to the library today for some socialization,” Curry said.

“So we just come on down. And it’s nice to be here. The folks are great,” Patricia Reid, a Queens resident, said.

Dennis Walcott, president and CEO of the Queens Public Library, says public library branches reopened their doors for Sunday service for the first time since November. This gives New Yorkers more opportunity to stay cool and access library services, not just in Queens.  

“No matter what borough you live in, there’s a library within a mile to a mile and a half of where you live. Come visit us,” Walcott said.

Lifeguards will be on duty at New York City beaches from 10 a.m. to 6 p.m. daily. The city has also extended hours at its Olympic and intermediate-sized pools from 11 a.m. to 8 p.m. through Tuesday, the mayor said. 

Meanwhile, Gov. Kathy Hochul on Monday also urged New Yorkers to guard against the heat and humidity over the next few days.

“New Yorkers should take precautions to stay cool and stay safe as the combination of severe heat and high humidity will pose a significant health risk,” Hochul said in a statement. “I encourage New Yorkers to stay hydrated, take advantage of free pool access at our beautiful State Parks, and plan ahead to cool off during this time.”

Hochul encouraged New Yorkers without air conditioning units to visit the Office of Temporary and Disability Assistance’s website to apply for a free unit through the Home Energy Assistance Program, which provides them to “income eligible households that include someone with a documented medical condition exacerbated by extreme heat, or households with young children or older adults,” according to a release.

Those interested in applying can also call their local office for the aging at 1-800-342-9871, the release said.