NYC heat wave? Potentially dangerous temps could hit this week l Forecast

NEW YORK CITY - A potentially dangerous heat wave could impact NYC this week, causing temperatures during the workweek to skyrocket to levels not experienced in several years.

JUMP TO: FORECAST l HEAT RISK MAP l SUMMER OUTLOOK

The heat will reach New York City by Tuesday, with widespread temperatures across the Northeast in the 90s expected and, when factoring in the humidity, it will feel like 100–105 degrees in many spots – lasting well through the end of the week.

• MORE: Heat wave forecast: Will NYC see a 100-degree day this week?

"Not only is it going to be hot, it's going to be stagnant conditions. You’re not going to have any kind of breeze that will cool you off either by the time we get into the middle to latter half of the week," said FOX Weather meteorologist Steve Bender.

Here's what you need to know about next week's potential heatwave, including a full forecast, a heat risk map and the rest of the summer outlook. 

Upcoming weekly forecast

Monday: Mostly sunny, with a high near 81.

Tuesday: Sunny, with a high near 88.

Wednesday: Mostly sunny, with a high near 86.

Thursday: Sunny, with a high near 90.

Friday: Mostly sunny, with a high near 90.

In the Northeast, a heat wave is defined as three or more days in a row of temperatures in the 90s. According to the FOX Forecast Center, that’s looking likely as the summer temperatures remain in the area through at least the end of next week.

Heat risk map

In many of the areas where daily records could be broken or there is a lot of pavement, the National Weather Service’s HeatRisk map has labeled communities at a Level 3 or 4 out of 4 for impacts.

The HeatRisk threat level takes into consideration the unusual nature of the heat, the duration of the extreme temperatures and potential health impacts.

• At a code red (Level 3) stage, heat affects anyone who is not adequately hydrated or those without access to cooling.
• Magenta (Level 4 signifies) extreme heat that is either rare or long in duration. Health systems can be impacted by an influx of patients with heat-related illnesses.

During the height of the heat wave on Thursday, most residents in New York will find themselves at a Level 4 out of 4.

The Centers for Disease Control and Prevention reports the most common illnesses from warm temperatures are heat exhaustion and heat stroke.

Health experts warn that heatstroke occurs when the body’s internal temperature rises rapidly, overwhelming its ability to cool down. Heatstroke can result in serious health complications and is most prevalent among young children and older adults.

NYC summer 2024 forecast

Those lazy, hazy, crazy days of summer are here – and so is FOX 5 NY's weather outlook for summer 2024 in NYC!

While New Yorkers should anticipate lots of fun in the sun, we can also be subject to scorching heat and high humidity, which can be dangerous if we're not careful.

For comparison, last summer wasn't too hot.

• 2023: 5 days of 90+ degrees
• 2022: 24 days of 90+ degrees
• The average is 15 days of 90+ degrees
• The last 100+ degrees day was July 18, 2012
• The hottest NYC day ever was 106 degrees on July 9, 1936

FOX Weather's Steven Yablonski helped contribute to this report.