Калкулатор за охлаждане на вятъра
Calculate wind chill (feels-like temperature in cold weather), or reverse-solve for temperature or wind speed. Includes frostbite risk categories.
Изчислете
Choose a calculation type, enter your values, and click Calculate Now to see wind chill results with risk categories and step-by-step solutions.
Резултат
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Решение стъпка по стъпка
Пълно ръководство за потребителя
Какво е Wind Chill?
Wind chill is the perceived decrease in air temperature felt by the body on exposed skin due to air flow. Wind increases the rate of heat loss from the body, making the temperature feel colder than the actual air temperature. The NWS Wind Chill Index uses a formula based on advances in science, technology, and computer modelling to provide an accurate way to measure cold-weather risk.
NWS Wind Chill Formula
WC = 35.74 + 0.6215×T − 35.75×V0.16 + 0.4275×T×V0.16
Where T = air temperature (°F), V = wind speed (mph)
Валиден, когато T ≤ 50 °F и V ≥ 3 mph
3 Calculation Types
Wind Chill
Enter air temperature and wind speed. Get feels-like temperature + risk.
Temperature from WC
Enter wind chill and wind speed. Finds actual air temperature.
Wind Speed from WC
Enter wind chill and temperature. Finds wind speed using iterative solving.
Wind Chill Risk Categories
| Wind Chill (°F) | Категория | Effect |
|---|---|---|
| ≥ 32 | Малка опасност | Little danger for properly clothed person. |
| 0 – 31 | Внимание | Risk of hypothermia with prolonged exposure. |
| −1 – −20 | опасност | Exposed skin can freeze in 10 minutes. |
| −21 – −40 | High Danger | Exposed skin can freeze in 5 minutes. |
| < −40 | Изключителна опасност | Exposed skin can freeze in under 2 minutes. |
Важни бележки
- Wind chill only applies when T ≤ 50 °F (10 °C) and V ≥ 3 mph.
- Wind chill only affects exposed skin, not inanimate objects.
- Dress according to wind chill, not just air temperature.
- Поддържани единици за скорост на вятъра: mph, km/h, m/s.