With a stretch of VERY hot weather ahead for the rest of this month into August, it is a good idea to look at how we measure ...

How is the heat index calculated, and why is it more important than the air temperature during some heat waves?

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

NWS issues a heat advisory for Oklahoma City with heat index up to 110 degrees, warning of heat-related illnesses.

Jacksonville is facing excessive heat this weekend, with the heat index expected to top 100 degrees across the area. News4JAX ...

The National Weather Service’s Fort Worth office extended the heat advisory for the Metroplex through 9 p.m. Saturday. Rising ...

How low should you set your thermostat for as record-breaking heat sweeps over the country? Here's what experts and other ...

Sometimes the temperature outside feels warmer than it is, and there's a reason. Here's a breakdown of the heat index.

WASHINGTON — Mayor Muriel Bowser activated a Heat Alert for Washington, D.C. Saturday morning, as feels-like temperatures were expected to bubble to a scorching 100 degrees.

A Heat Advisory is in effect from noon to 9 pm Thursday. Expect heat index values up to 107 with temperatures of 99 to 103.

High temperatures and humidity will combine to create potentially dangerous hot weather conditions over the Lowcountry for the next few days.