As the heat and humidity increase this week, we will hear a lot about the heat index, especially as temperatures come close or surpass the 100-degree mark. The heat index itself is relatively new, ...

It’s often said that it’s not the heat that gets you; it’s the humidity. We had our first serving of the uncomfortable and ...

Extreme levels of heat and humidity are forecast to spread across the country over the next two weeks, blanketing the Southwest, Midwest, and East Coast with high temperatures beginning this June 19 ...

Some hot days feel even worse thanks to high humidity, trapped heat and dew points. Cities are especially vulnerable. By Nazaneen Ghaffar Nazaneen Ghaffar is a reporter on The Times’s weather team. It ...

COLUMBIA, S.C. — When we talk about hot days here in South Carolina, the temperature only tells part of the story. The real danger often lies in the heat index or the “feels like” temperature. The ...