Wind Chill Calculator
Calculate the "feels like" temperature based on air temperature and wind speed. The wind chill index indicates how cold it actually feels when wind is factored in.
Risk of frostbite is low for most people. Dress appropriately for cold weather.
Frostbite risk: Low risk
Wind Chill Safety Levels
Frostbite risk is low for most people with proper clothing.
Above the NWS 30-minute frostbite line. Cover exposed skin.
Frostbite near 30 minutes on the NWS chart. Limit exposure.
Frostbite near 10 minutes on the NWS chart. Avoid prolonged exposure.
Frostbite in 5 minutes or less. Life-threatening conditions. Avoid outdoor exposure.
Understanding Wind Chill
What is Wind Chill?
Wind chill is the perceived decrease in air temperature felt by the body on exposed skin due to the flow of air. Wind increases the rate of heat loss from the body, making it feel colder than the actual temperature.
Why Does Wind Matter?
Your body warms a thin layer of air next to your skin. When wind blows, it carries away this warm air and your body must heat a new layer. The faster the wind, the faster heat is carried away, making you feel colder.
Cold Weather Safety Tips
Dress in layers, cover exposed skin (especially ears, nose, fingers, and toes), stay dry, and limit time outdoors in extreme cold. Watch for signs of frostbite: numbness, white or grayish skin, and firm or waxy feeling skin.
How is Wind Chill Calculated?
This calculator uses the wind chill formula developed by the National Weather Service (NOAA) in 2001. The wind chill is calculated using air temperature and wind speed at an average walking speed of 3 mph.
Where T is the air temperature in °F and V is the wind speed in mph. Wind chill is only calculated when the temperature is 50°F (10°C) or below and wind speed is above 3 mph (5 km/h), as the cooling effect of wind is minimal outside these conditions.
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