The heat index, or apparent temperature, combines air temperature and humidity to indicate how hot it feels to the body. High ...

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.

A risk expert explains how to read the heat index and interpret extreme heat warnings, and how to stay safe.

After a weekend of extreme temperatures, the agency indicated that the heatwave in NC isn't over yet. Here's what residents ...

The heat index is an important distinction from air temperature when it comes to safety planning, says Joshua Merson, program director of Northeastern's Extreme Medicine certificate program.