A massive heat wave is unleashing the hottest weather in years across the eastern United States, and the temperature in one of the biggest cities in the country could hit triple digits for the first time in more than a decade.

New York City is forecast to approach the 100-degree mark Tuesday afternoon, the hottest day of the ongoing heat wave. The AccuWeather RealFeel® Temperature will be even higher, peaking between 105 and 110 F, when taking into account factors such as high humidity and intense sunshine. Even if the temperature does not reach 100 degrees at the city's weather station in Central Park, it could hit triple digits in some areas nearby.

Extreme heat can be dangerous for people who spend time outdoors. It also puts extra strain on the energy grid as air conditioning units go into overdrive to keep homes and businesses cool.

"This week's heat wave could be deadly and life threatening if you are not prepared," New York City Mayor Eric Adams said. "This week's heat wave could be deadly and life-threatening if you are not prepared."

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