It looks like the sizzling temperatures Jacksonville experienced over the weekend were just preheating the oven. The real scorcher starts today — and will continue through Tuesday. The National ...

Here's how to stay safe as temperatures reach 100 degrees From cats to horses, keep animals cool during record heat How to cool down your car fast The latest: Long stretch of heat alerts wraps hottest ...

The sticky combination of heat and high humidity can be more than uncomfortable -- it can be deadly. Mario Tama/Getty Images You’ve probably heard people say, “It’s not the heat, it’s the humidity.” ...

The heat index is a measure of how hot it really feels on your body when relative humidity is factored in with the actual air temperature. Since heat index values were devised for shady, light wind ...

Multiple states are under extreme heat warnings, advisories or watches on Wednesday, July 23 due to a heat dome that is expected to slowly spread east, according to the National Weather Service. The ...