Add Yahoo as a preferred source to see more of our stories on Google. The first widespread, significant heat wave of the summer is underway, as a massive heat dome intensifies into the weekend, ...

Intense heat is on the way for more than half of the country, just in time for the second week of summer. "A multiday heat wave is brewing across the middle of the nation ahead of the Fourth of July ...

Meteorologists warn extreme heat and sudden storms could force cancellations or alter plans for communities nationwide.

The United States is bracing for some incredibly warm temperatures this week.

High temperatures affect public health across wide swaths of the United States each summer, causing spikes in emergency room visits and hundreds of heat-related deaths. As temperatures rise, CNN is ...

The first widespread, significant heat wave of the summer is underway, as a massive heat dome intensifies into the Fourth of July weekend.