Wind Chill Calculator
NewCalculate the "feels like" wind chill temperature from air temperature and wind speed using the official U.S. National Weather Service formula.
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feels-like wind chill temperature
Frequently Asked Questions
What formula does this use?
This calculator uses the official U.S. National Weather Service wind chill formula (adopted in 2001): WCT = 35.74 + 0.6215T − 35.75(V^0.16) + 0.4275T(V^0.16), where T is air temperature in °F and V is wind speed in mph.
Why does wind chill only apply under certain conditions?
The NWS formula is only valid for temperatures at or below 50°F and wind speeds of 3 mph or higher — below that wind threshold there isn't enough airflow to meaningfully accelerate heat loss from exposed skin, and above 50°F wind chill isn't a meaningful safety concern, so the calculator shows the actual air temperature instead in those cases.
Why does wind make it feel colder than the actual temperature?
Your body constantly warms a thin layer of air right next to your skin; wind strips that warmed layer away faster than your body can replace it, accelerating heat loss through convection — the stronger the wind, the faster this warm air layer is displaced, which is why wind chill drops quickly as wind speed increases even without the air temperature changing.
Is wind chill the same as what a thermometer reads?
No — a thermometer always reads the true air temperature regardless of wind. Wind chill describes how quickly exposed skin loses heat and therefore how cold conditions *feel* and how much frostbite risk increases, not a literal change in the air's actual temperature.