How is wind chill calculated?

Wind Chill Index = 13.12 + 0.6215 x T - 11.37 x V^0.16 + 0.3965 x T x V^0.16, where T is temperature in Celsius and V is wind speed in km/h. This reflects the actual heat loss from exposed skin.

What temperature requires stopping outdoor exercise?

At temperatures colder than -25C with wind chill, vigorous outdoor exercise carries significant frostbite risk for exposed extremities. At -40C or below, even short exposure to extremities is dangerous.

Cold Weather Exercise Frostbite Risk Time Calculator

Calculate frostbite risk time from air temperature and wind speed (wind chill). At -27C wind chill: frostbite in 30 minutes; at -48C wind chill: frostbite in 10 minutes.

Use the full interactive calculator below, or

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Frequently Asked Questions

How is wind chill calculated?

What temperature requires stopping outdoor exercise?