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Wind Chill Calculator

Wind Chill Calculator

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

Hvad er Wind Chill Calculator?

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The wind chill index measures the perceived decrease in air temperature felt by the body due to wind. Wind accelerates heat loss from exposed skin, making it feel colder than the actual temperature.

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Formel

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f(x)WC (°F) = 35.74 + 0.6215×T − 35.75×(V^0.16) + 0.4275×T×(V^0.16), where T=°F, V=mph

Variabelbeskrivelse

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SymbolNavnEnhedBeskrivelse
WCWind Chill°F—
TAir temperature°F—
VWind speedmph—

Sådan Wind Chill Calculator

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  1. 1Wind chill (°C) = 13.12 + 0.6215T − 11.37V^0.16 + 0.3965T×V^0.16
  2. 2T = air temperature (°C); V = wind speed (km/h)
  3. 3Only meaningful when T < 10°C and V > 4.8 km/h
  4. 4Wind speeds above 80 km/h have diminishing additional effect

Løste eksempler

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Eksempel 1
Givet:Temperature −10°C, wind 40 km/h
Resultat:Wind chill = 13.12 + 0.6215×(−10) − 11.37×40^0.16 + 0.3965×(−10)×40^0.16 ≈ −20°C

Praktiske anvendelser

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Winter weather advisory issuance

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Outdoor activity safety (hiking, sports)

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Occupational health (outdoor workers)

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Frostbite risk assessment

Wind Chill Reference Chart (°C)

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Temp10 km/h20 km/h40 km/h60 km/h
-5-10-13-15-17
-10-15-19-22-25
-15-21-26-30-33
-20-27-33-38-41

Ofte stillede spørgsmål

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Q

Is wind chill real or just perceived?

A

Real: wind accelerates heat loss from exposed skin. Doesn't change actual air temperature, but speeds freezing.

Q

What wind chill is dangerous?

A

Below −15°F: frostbite possible in 30 min. Below −25°F: frostbite in 10 min. Below −35°F: frostbite in <5 min.

Q

How fast does wind speed need to be for wind chill?

A

3 mph minimum for meaningful effect. Higher speeds = greater wind chill. Wind chill maxes out around 60 mph.

Mathematically verified
Reviewed October 2026
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