How hot does it feel?
The Heat Index is used to determine danger zones for heat related illnesses in the summer. Hotter temperatures combined with high humidity can put people at risk for heat stroke. According to The National Weather Service (NWS), 175 people on average die as a result of heat illnesses each year. It is ranked as the number two cause of direct weather related deaths as the body loses its ability to maintain a healthy temperature through evaporative cooling.
Find your local Heat Index by following the directions below.
Difficulty: Easy
Time Required: Under 10 minutes
Here's How:
- Click on the link Calculate the Heat Index .
- Notice you need current temperature and humidity readings. Watch your local news weather report to get the temperature and humidity readings.
- Insert the values into the correct box on the left. Be sure to pick Celsius or Fahrenheit by clicking on the buttons.
- The results will be displayed on the right. Now you know how hot it "feels" outside!
- NOTE: If results box on the right side shows NaN then you have not entered data into the left correctly, or data is missing.
Tips:
- Suggestion: PC users may find it easy to right-click on the Heat Index calculator link and open the link in a new window.
- For the Public: Check the NOAA Heat Index Daily Mean Predictions to see if you are in a heat danger zone.
- For the Classroom A Heat Index chart is available for download from the National Weather Service - Heat Index Calculation Chart
- Advanced: Try your math skills by calculating the Heat Index using equations. Go to Heat Index Equations for the formulas.
What You Need
- A computer with internet access