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

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

A heat dome is bringing high temperatures and high humidity to much of the country through next week. Some heat records set ...

As a major heat wave builds and takes center stage in the weather from late this week to next week, groups of severe ...

Weather forecasters have warned of extreme and dangerous temperatures as a major heat wave sweeps across the central and ...

Newsday meteorologist explains how a heat dome affects Long Island weather, causing temperatures to soar and creating ...

A dangerous heat dome is forming over the mid-Atlantic and is expected to intensify through next week, bringing Baltimore its ...

New Jersey's first heat wave of the year will be a brutal one, with excessive heat alerts already issued in many counties.

Some parts of the U.S., such as Phoenix, Arizona, are famously hot without the mugginess. Phoenix and nearby desert regions ...

A sprawling high-pressure system, also known as a heat dome, is settling over the U.S. during the first full week of summer, ...

Here are some of the key warning signs to watch for when temperatures rise – and ways to keep cool when the heat and humidity ...

A massive heat dome will expose 220 million Americans to 90°F+ temperatures with 35 million facing triple digits. Survival ...