Weather Conditions
Enter temperature and humidity
Range: 50°F - 120°F
Range: 0% - 100%
Temperature must be between 50°F and 120°F. Uses the Rothfusz regression equation for accurate heat index calculation.
Heat Index Report
Calculated apparent temperature
Heat index report will appear here
The heat index calculates how hot it actually feels when humidity is combined with air temperature. High humidity makes it harder for sweat to evaporate, making the body feel hotter.