実用

Wind Chill Calculator

🌬️Wind Chill Calculator

Temperature (°C)

Must be ≤ 10°C / 50°F

Wind speed (km/h)

4.8 km/h を超える必要があります

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Detailed Guide Coming Soon

We're working on a comprehensive educational guide for the Wind Chill Calculator in your language. The content below is shown in English.

とは何か Wind Chill Calculator?

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Wind chill is the perceived decrease in air temperature felt by exposed skin due to the flow of air. Wind accelerates heat loss from the body — the faster the wind, the colder it feels, even if the actual temperature is unchanged.

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方法 Wind Chill Calculator

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1The Environment Canada / NWS formula: WC = 13.12 + 0.6215T − 11.37V^0.16 + 0.3965TV^0.16
2T = air temperature (°C), V = wind speed (km/h)
3Only applies when temperature is below 10°C (50°F) and wind speed > 4.8 km/h
4Human skin temperature is used as the reference (33°C / 91°F)

解いた例

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例 1

入力:−10°C with 30 km/h wind

結果:Feels like −20°C

Wind doubles the effective cold

例 2

入力:5°F with 20 mph wind

結果:Feels like −15°F

Frostbite risk in 30 minutes

Wind Chill Risk Levels (°C)

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Feels Like (°C)	Risk	Frostbite time
0 to −9	Low	No risk
−10 to −27	Moderate	Exposed skin can freeze in 10–30 min
−28 to −39	High	Frostbite in 10–30 min
−40 to −47	Very High	Frostbite in 5–10 min
−48 to −54	Severe	Frostbite in 2–5 min
Below −55	Extreme	Frostbite in < 2 min

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プロのヒント

Cover all exposed skin in severe wind chill. Frostbite can occur on the cheeks, nose, ears, and fingers even during brief exposure when wind chill is below −27°C.

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ご存知でしたか？

The wind chill formula used today was updated in 2001 by Environment Canada and the US NWS after the original 1940s formula (developed by Antarctic researchers Siple and Passel) was found to overestimate coldness.

参考文献

Wind Chill Calculator