The temperature in New York City has reached 100 degrees as the eastern U.S. sweltered under an extreme heat wave.

Not since 2019 have so many New Yorkers in a single day sought emergency medical attention for heat-related illnesses.

NEW YORK – A massive heat dome that sparked the first major heat wave of the summer brought record-breaking temperatures to ...

Ozone: Summer days tend to see higher concentrations of this gas, which is harmful when it forms near the ground. Hot and sunny conditions accelerate that process. Ground-level ozone irritates the ...

From Atlantic beaches to New England hamlets, humidity surged to extremes and temperatures soared to records that overpowered ...

It's officially the first heat wave of the season​ in NYC. High temperatures hit the 90s Wednesday, for a third day in a row​ ...

As previous disasters have laid bare the US’ vulnerabilities to other types of extreme weather, this week is revealing ...

Dangerously hot temperatures will grip New York City and the Tri-State area again on Wednesday, making it an official heat ...

A record-smashing heat wave broiled the U.S. East for another day Wednesday, even as thermometers were forecast to soon ...

Boston broke its record daily high by six degrees, reaching 101 degrees on Tuesday. Some construction workers were forced to ...

Jimmy Fallon kicked off his monologue on Wednesday’s “The Tonight Show” with some amusing jokes about the historic heatwave ...