SIR NAPIER SHAW'S representation of upper air temperatures by the method of the T-φ or tephigram is, from the thermodynamical aspect, the best that has yet been proposed. The depegram (or graph ...

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

Blame the heat index, also called “apparent temperature.” It’s a combination of air temperature and humidity, and it measures what the body actually feels, CNN meteorologist Haley Brink said.