What is the Heat Index Today?

With summer fast approaching, knowing the heat index is essential in helping us enjoy the nice weather without putting our safety at risk. The heat index is a measure of how hot it actually “feels” outside, accounting for the combined effects of the temperature and relative humidity. Read on to learn more about what the heat index is, how to calculate it and most importantly, how hot it feels today.

What is the Heat Index?

The heat index is an accurate measure of how hot it actually feels in any given outside temperature and humidity combinations. Although most people are aware of the air temperature, they often don’t take into consideration the effects of moisture in the air (humidity). As humidity increases, the ability of sweat to evaporate off the skin and cool the body is diminished. The result is a higher perceived temperature, and the term used to reflect this effect is the heat index.

How to Calculate the Heat Index?

The heat index is calculated using an incredibly complex formula which takes into account both the temperature and the relative humidity. Entering the relevant data into the formula will tell you exactly how hot it feels outside. This is great for knowing the advanced science of the heat index, but it does require a bit of effort and won’t help you know what it feels like today. For gatherings or planning to be outdoors, it’s important to know how hot it feels so you can plan accordingly and maintain a safe outside temperature.

How Hot Does it Feel Today?

In order to know exactly how hot it feels today, use your local weather station – it’ll give you the actual temperature and relative humidity. Take those two values and use a heat index calculator or chart to determine approximately how hot it feels outside. Because the heat index is calculated to the nearest whole number, there may be a small margin of error so always check with your local weather station to determine extreme temperatures. Planning your outdoor activities with today’s heat index in mind is essential to staying safe in summer’s heat!