Humidex is a measure of how hot we feel. It is a parameter intended for the general public to express how the combined effects of warm temperatures and humidity are perceived. It provides a number that describes how hot people feel, much in the same way the equivalent chill temperature, or "wind chill factor," describes how cold people feel.Environment Canada uses humidex ratings to inform the general public when conditions of heat and humidity are possibly uncomfortable.
Table 1
Humidex
Range
Degree of Comfort
20-29
comfortable
30-39
some discomfort
40-45
great discomfort; avoid exertion
above 45
dangerous; heat stroke […]
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