Air temperature is an important factor in how hot or cold you feel, but it’s not the only one. A few months ago, I posted a piece about how to calculate humidex, but given that it’s winter here in Ottawa, it’s highly unlikely that you’re going to have to worry about high humidex days for a few months. Wind chill, on the other hand, is something that you are almost certainly going to have to contend with in the next few months.

So, what exactly is wind chill and how is it calculated? (more…)