Add Yahoo as a preferred source to see more of our stories on Google. The sticky combination of heat and high humidity can be more than uncomfortable -- it can be deadly. Mario Tama/Getty Images ...

If you are living in one of many areas of the U.S. currently experiencing a heat wave, your outdoor thermometer may say it's in the 90s, but your local weather station tells you it feels like triple ...

Although the actual temperature has reached triple digits only once in each city, the heat index, the temperature it feels like when humidity is factored in, has surpassed 100 on many occasions in ...

COMMUNITIES. THAT WAS PRETTY QUICK, RAVEN. YEAH IT WAS. AND YOU CAN SEE HOW THE EYE OF THE STORM LOOK THERE. AND IT IS GOING THROUGH EYEWALL REPLACEMENT, BUT IT’S A CATEGORY THREE IS RIGHT NOW. SO ...

KAWAGOE, Japan – Midway through Wednesday’s scorching opening round at Kasumigaseki Country Club, Lydia Ko’s caddie filled an ice pack in a desperate attempt to beat the heat. “He put ice in my ice ...

Heat advisories continue across much of Florida, with high temperatures and heat index values creating dangerous conditions. Potential tropical development northeast of Florida may bring some relief ...

ORLANDO, Fla. — Central Florida is under a heat advisory on Friday, with temperatures expected to reach a heat index of 104 to 109 degrees. The advisory comes as the region experiences a combination ...

As the heat index hit 105 degrees, lawyers requested swift cooling measures in a Missouri prison with no A/C. One man shares the dangerous conditions inside while people await a judge’s ruling. In May ...

A weak cold front is expected to approach Florida Aug. 1-2. The front could bring a slight drop in temperatures and some thunderstorms, especially to North Florida. Highs are forecast to range from ...

You’ve probably heard people say, “It’s not the heat, it’s the humidity.” There’s a lot of truth to that phrase, and it’s important to understand it as summer temperatures rise. Humidity doesn’t just ...