States across the central and eastern U.S. are under extreme heat watches and warnings as the areas face a dangerous heat wave throughout the first half of the week, according to the National Weather Service. "Extremely dangerous heat wave expands from ...

A massive heat dome will bring stifling temperatures and oppressive humidity for millions across much of the United States in the coming days. The high-pressure system is forecast to cause widespread high temperatures, with daytime readings in the 90s ...