Wind Chill Calculator
Calculate wind chill temperature and frostbite risk using the NOAA formula
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Enter temperature and wind speed to calculate wind chill
Wind Chill Reference Table (°F)
| Temp (°F) | 5 mph | 10 mph | 15 mph | 20 mph | 25 mph |
|---|---|---|---|---|---|
| 40°F | 36 | 34 | 32 | 30 | 29 |
| 30°F | 25 | 21 | 19 | 17 | 16 |
| 20°F | 13 | 9 | 6 | 4 | 3 |
| 10°F | 1 | -4 | -7 | -9 | -11 |
| 0°F | -11 | -16 | -19 | -22 | -24 |
| -10°F | -22 | -28 | -32 | -35 | -37 |
Click any row to load that temperature. Wind chill values from NOAA 2001 formula.
Frostbite Risk Levels
Low Risk
WC ≥ 14°F
No frostbite risk in normal exposure
Moderate Risk
WC -18 to 14°F
Frostbite possible in 30 min
High Risk
WC -40 to -18°F
Frostbite possible in 10 min
Very High Risk
WC -55 to -40°F
Frostbite possible in 5 min
Extreme Risk
WC ≤ -55°F
Frostbite possible in 2 min
Frequently asked questions
What is wind chill and how is it calculated?
Wind chill is the perceived decrease in air temperature felt by the body on exposed skin due to wind. The NOAA 2001 formula accounts for wind speed and air temperature: WC = 35.74 + 0.6215T - 35.75V^0.16 + 0.4275TV^0.16, where T is temperature in °F and V is wind speed in mph.
When does wind chill not apply?
Wind chill only applies when temperature is at or below 50°F (10°C) and wind speed is at least 3 mph (5 km/h). At warmer temperatures or in calm conditions, wind chill is not calculated because the formula produces inaccurate results outside these ranges.
What is the frostbite risk at different wind chill values?
Low risk (WC ≥ 14°F / -10°C): no frostbite in normal exposure. Moderate (WC -18 to 14°F / -28 to -10°C): frostbite in 30 minutes. High (WC -40 to -18°F / -40 to -28°C): frostbite in 10 minutes. Very High (WC -55 to -40°F / -48 to -40°C): frostbite in 5 minutes. Extreme (WC ≤ -55°F / -48°C): frostbite in 2 minutes.