The National Weather Service issued an extreme heat warning for a second day as the heat index surpasses 100. See how hot it will get in Delaware.

Extreme Heat Warning issued by NWS for the Baltimore/Washington DC area with heat index values up to 111 degrees.

In major cities such as Washington, D.C., Baltimore, Philadelphia and New York, the temperature was forecast to approach 100 ...

It'll be very hot, but what conditions are required for the extreme heat warning that much of New Hampshire is under? Matt Hoenig breaks it all down.

Primary threats during Monday night's severe weather include heavy rain and damaging winds, with the possibility of some hail ...

While the rest of this week will feel stiflingly hot, temperatures are not expected to reach the highs required for an excessive heat warning.

With the heat becoming increasingly difficult to manage this summer, we take a look at what you can expect when you're ...

NYC is under an excessive heat warning​ today, while Long Island and the Jersey coastline are under a heat advisory.

Some hot days feel even worse thanks to high humidity, trapped heat and dew points. Cities are especially vulnerable.

Summer is a time to relax and unwind in the sun, but many activities come with an element of potential danger.

An excessive heat warning has been issued for the Hudson Valley through Tuesday at 8 p.m., according to the National Weather Service. The combination of temperatures in the 90s and dew points in the ...

Con Edison is distributing dry ice to residents in eastern Queens impacted by power outages due to the soaring temperatures ...