With the heat of summer upon us, we hear a lot about the heat index in our weather forecasts these days. But what exactly is the heat index and how is it calculated?

SC health officials define obesity as anyone with a Body Mass Index (BMI) of 30 or above. So how is that calculated?

How is the heat index calculated? If you want to get out a calculator and figure out the heat index yourself, here is the formula, as published by Lans P. Rothfusz in 1990: ...

Turns out both things are true: it’s called the Heat Index. The heat index is used to calculate not the actual temperature of the air around you, but instead how hot you feel.