Weather 101 Heat Index Explained Figure 1. heat index chart. in order to determine the heat index using the chart above, you need to know the air temperature and the relative humidity. for example, if the air temperature is 100°f and the relative humidity is 55%, the heat index will be 124°f. when the relative humidity is low, the apparent temperature can actually be lower. In simplest terms, the heat index is the "feels like" temperature, or how hot it really feels when the relative humidity is factored in with the actual air temperature. the heat index is forecast.
The Heat Index Explained Videos From The Weather Channel In simplest terms, the heat index is the "feels like" temperature, or how hot it really feels when the relative humidity is factored in with the actual air temperature. your body cools itself by. What is the heat index? the heat index is a measure of how hot it really feels outside, when humidity and other factors are considered along with the temperature, according to kimberly mcmahon, a. Simply put, the heat index is a combination of the air temperature with what the current relative humidity is. this produces a human perceived equivalent temperature or how hot it actually feels to your body. for example, very high levels of humidity can make a 90 degree temperature feel like it's well over 100!. According to the national weather service, the heat index is a “measure of how hot it really feels when relative humidity is factored in with the actual air temperature.”. for example, if the.
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