What the heat index means to you

This weekend we expect temperatures to break into the 90s, but it may feel hotter outside than what the actual temperature is. When we see high temperatures combined with a high relative humidity, we experience high heat indices.

In the summer months it is crucial to be aware of the heat index as you step outside. High index values pose dangers to the human body. As the body gets overheated it’s natural response is to sweat, which in return cools itself down. As sweat evaporates, the body is cooled and the temperature is regulated. During days where the relative humidity is high, less sweat is produced, thus less sweat is evaporated from the body. Ultimately, this makes us feel even hotter in humid conditions.

As temperature and relative humidity increase, so does the heat index. You can use the heat index chart if you know the current outside temperature and relative humidity. It’s important to note that the heat indices on this chart are calculated for shady locations. If you are standing in the sun it will seem even hotter outside. If the relative humidity is low enough, it could have a cooling effect on the body, making it seem actually colder outside than what it really is.

It is always important to know the threat of heat indices on the human body:

Staying hydrated, wearing loose fitted clothing, and remaining indoors or in shaded areas is way one to protect yourself from overheating during the summertime.