Officials warn of health risks as massive weather system traps sweltering air.

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

Summer will make a dramatic entrance in the U.S. this week with a heat dome that will bring stifling heat and uncomfortable ...

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

(NEXSTAR) – A “heat dome” is bringing scorching temperatures and oppressive humidity to the Central and Eastern portions of ...

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

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

Millions of Americans are facing oppressive heat, with forecasters expecting a "heat dome" to develop over parts of the ...

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

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

These expansive areas of sinking air can push temperatures up to 30 degrees above average during the summer while increasing ...