Wind Chill Calculator

Calculate how cold it actually feels when wind speed and low temperatures combine. Provides wind chill in °F and °C with safety categories.

What Is Wind Chill?

Wind chill describes how cold the air feels on your skin when the wind is combined with low temperatures. Wind increases heat loss, making the perceived temperature much colder than the actual air temperature.

Official Wind Chill Formula (NOAA)

WCI = 35.74 + 0.6215T - 35.75V^0.16 + 0.4275TV^0.16

Where:
  T = temperature in °F
  V = wind speed in mph

Wind Chill Risk Categories

  • 0 to -9°C (32 to 15°F): Low risk
  • -10 to -27°C (14 to -16°F): Moderate — risk of frostbite
  • -28 to -39°C (-17 to -38°F): High — frostbite in 10–30 min
  • -40°C and below (-40°F): Extreme — frostbite in under 10 min

How to Stay Safe

  • Wear insulated, windproof clothing
  • Limit skin exposure
  • Seek shelter if you feel numbness
  • Keep extremities warm (hands, feet, face)

Frequently Asked Questions

No. Humidity affects heat index, not wind chill.
No. Wind chill only applies outdoors where the wind hits exposed skin.
Wind chill always makes the temperature feel colder, never warmer.