A heat dome is impacting a large portion of the U.S. with extreme heat warnings, watches, or advisories. The entire state of Florida is under a heat advisory, with heat index values expected to reach ...

According to the Energy Department, turning thermostats back 7 to 10 degrees for eight hours a day can save as much as 10% a year on heating costs. And the heating system doesn't work any harder to ...

During the hot, humid summer months, meteorologists often discuss the heat index instead of the actual air temperature. But how is the heat index calculated, and why is it more important than the air ...

The heat index, or apparent temperature, combines air temperature and humidity to indicate how hot it feels to the body. High humidity slows sweating, the body's natural cooling system, making ...