Extreme heat warnings are in effect across the Northeast, including Boston, New York City, Philadelphia, Baltimore and Washington, D.C. Actual temperatures are approaching 100 degrees, while the heat ...

Those triple-digit air temperatures — with the feels-like index even worse because of humidity — are possible in places where ...

After one of the warmest June mornings in records dating to 1872, Philadelphia may experience its first 100-degree reading in ...

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

About 33 million people, almost 10% of the country, will feel blistering 100-degree heat on June 24, meteorologist Ryan Maue ...

"Dangerous heat will intensify across much of the Northeast and Mid-Atlantic early this week," meteorologist Jacob Hinson said.

Once the Philadelphia region gets past the heat wave, unstable air returns, and the storm door will open through the weekend.

An extremely dangerous heat wave is underway for the eastern half of the United States, with Tuesday expected to bring peak ...

Tuesday will be the hottest day of this heat wave for the mid-Atlantic and Northeast, and portions a dozen states have ...

A long-lasting extreme heat wave is reaching its dangerous crescendo Tuesday, likely bringing the hottest day in a decade to ...