What is wind chill temperature?

Wind chill temperature refers to the temperature that a person perceives, which accounts for both the actual air temperature and the cooling effects of wind. As wind blows over skin, it accelerates heat loss from the body, making it feel colder than the actual measured air temperature. This is especially significant in cold weather, where the combination of low temperatures and wind can lead to a higher risk of frostbite or hypothermia.

The concept of wind chill is important for understanding how weather conditions can impact human comfort and safety. This perceived temperature can inform people of the actual risk associated with outdoor exposure in cold and windy conditions. It provides a practical measurement that helps in planning activities and ensuring appropriate clothing is worn to prevent cold-related health issues.

Other options, while related to aspects of weather and temperature measurement, do not accurately define wind chill. The actual temperature measured with a thermometer does not take wind into account. Humidity levels contribute to perceived temperature but are not part of the wind chill calculation. The heat index is concerned with extreme heat and humidity rather than cold temperatures influenced by wind.