![]() ![]() It takes energy for our bodies to warm up a new layer. When the wind blows, it takes this protective layer away, exposing our skin to the outside air. On a calm day, our bodies insulate us somewhat from the outside temperature by warming up a thin layer of air close to our skin, known as the boundary layer. We call the cooling sensation that is caused by the combined effect of temperature and wind, the wind chill. On cold and blustery winter days, listen for the wind chill index in your local weather forecast.Īnyone who has ever waited at a bus stop or taken a walk on a blustery winter day knows that you feel colder when the wind blows. As well as making informed decisions based on accurate wind chill information, such as whether it is safe for children to play outdoors. This includes dressing warmly to avoid frostbite and hypothermia. The wind chill index allows Canadians to learn the best ways to avoid injuries from the cold. For example, if the wind chill is -20 while the outside temperature is only -10✬, it means that your face will feel as cold as if it was a calm day (no wind) with a temperature of -20✬. ![]() By equating the outdoor conditions to an equivalent temperature with no wind, the index represents the degree of "chill" that your skin senses. The index is displayed in temperature-like units, the format preferred by most Canadians. As a result, the wind chill observations and forecasts that you hear are now much more representative of what you actually feel. This assists in the understanding of how the body loses heat when exposed to cold. It uses research from human volunteers and advanced computer technology combined with recent medical advances. PDF version - 882 KB Canada's wind chill indexĬanada's wind chill index is accurate, easy to understand and reflects the needs of Canadians. ![]()
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