NWS Wind Chill Calculator
Use the National Weather Service formula within its stated cold-weather domain: temperature at or below 50°F and wind above 3 mph.
Your result
EVERYDAYEnter your values and select calculate.
On this page How it works & practical examples
How to use the NWS Wind Chill Calculator
Use the National Weather Service formula within its stated cold-weather domain: temperature at or below 50°F and wind above 3 mph. Inputs are manually supplied, not forecast data.
The calculation
Worked example
0°F air and 10 mph wind give about −15.9345°F wind chill.
Assumptions and limits
An apparent-temperature model for exposed skin, not an object temperature or survival-time guarantee. Sun, clothing, wetness and individual vulnerability are not modeled.
Common questions
Which inputs should I use?
Use the National Weather Service formula within its stated cold-weather domain: temperature at or below 50°F and wind above 3 mph. Inputs are manually supplied, not forecast data.
What does the result exclude?
An apparent-temperature model for exposed skin, not an object temperature or survival-time guarantee. Sun, clothing, wetness and individual vulnerability are not modeled.