Heat Index Calculator
Heat index from temp and humidity.
Result
Heat index
105.9°F
Common questions
What is the heat index?
The heat index combines air temperature and relative humidity to show how hot it actually feels. High humidity reduces your body's ability to cool through sweating, making it feel hotter than the air temperature.
When is heat index dangerous?
A heat index above 105°F (40°C) is considered dangerous with risk of heat stroke. Above 130°F is extremely dangerous. Stay hydrated and limit outdoor exposure at high heat index values.