A "heat dome" has developed on the East Coast that could send temperatures to 100 degrees in Boston this week. As a result, ...

A multiday heat wave is bringing high temperatures and health risks from the Midwest to the Northeast, prompting warnings and ...

More than 150 million Americans are under the highest-level extreme heat alerts during a wave of above-average temperatures.

Major cities across the United States are preparing for extreme temperatures caused by a heat dome that hit the U.S. Plains ...

In parts of the Midwest and Mid-Atlantic regions more than 42 million were under extreme heat watches the morning of June 20, according to the National Weather Service. More than 37 million Americans ...

Heat dome will cause dangerously high temperatures in many places across the country this weekend, especially the Midwest and East Coast.

Many places around the country will experience their first significant heat of the year in the next few days. Here’s why it’s ...

Maps show where extreme humidity and 90- or 100-degree temperatures will affect about 255 million people across the United ...

This year's fire season started slowly due to cool and rainy weather, but it roared to life last week with near-record heat ...

The Supreme Court is in the homestretch of a term that has lately been dominated by the Trump administration’s emergency ...

Unless society stops pumping more greenhouse gases in the air, “we can expect multiple factors to worsen summer extremes,” a ...