New Wind Chill Index for Canada

Canadians will get a more accurate wind chill index this winter.

So as not to confuse it with actual temperature - which does not change regardless of how hard the wind blows - wind chill is now expressed as a temperature-like index, without the degree symbol. The formula gives Canadians a more accurate idea of how cold it really feels outside, so they can enjoy winter activities and take the necessary precautions.

Scientists determined that wind chill was over-estimated in the past, particularly at high wind speeds. Under the new system, Environment Canada expects to issue fewer warnings of extreme cold conditions to Canadians.

The new wind chill index is now included in Environment Canada's forecasts, when weather conditions warrant. A wind chill warning is issued when conditions become hazardous. Weather forecasts are available through radio and TV broadcasts, as well as on Environment Canada's Weatheradio, recorded telephone messages, and web sites.

Explore the links on this page for detailed information on wind chill and the science behind the index.