Just when you thought you were going to get off the net without wasting any more time, you come across this page. Knowing heat index temperature a practically useless exercise for most of us. But, all of you that want to know just how miserable you should feel when the humidity is high on a hot day, read on! The correlation on which the calculations are based is stolen from a NOAA web page authored by Ron Murphy. A chart stolen from the web site www.jeonet.com/heat.htm is here on this site. We'd like to think that the calculation below produces values that are close to the charted values in the range that the calculations are purported to work. But, who is to say what one person feels like relative to another under the same temperature and humidity readings?

Enter your input information in the next two white boxes; press the appropriate button for calculation; then view results in the white boxes below the buttons. Regardless of whether English or metric units are used, please click the correct button. The result is shown in both °F (Fahrenheit) and °C (Celsius). The calculation is good for a temperature over 80°F (26.7C) and any relative humidity 40% to 100%.

Now, if we could get a chart for how good we should feel when a breeze blows on a day that is too hot, our lives would be complete.