What is Iowa’s Highest Heat Index of All-Time?
As another round of sweltering heat is ready to make us sweat this weekend.
As of Friday morning, the southern half of Iowa (including Cedar Rapids) is in a Heat Advisory for Saturday with heat index values as high as 105*.
The Heat Index is a measure of how hot it really feels when relative humidity is factored in with the actual air temperature. Our bodies try to keep us cool by losing water through the skin and sweat glands. But when the humidity is too high, our sweat won’t evaporate. The higher the humidity, the harder it is for the body to sweat and cool itself down.