0 a measurement of how hot the air feels and how uncomfortable people are likely to be based on the temperature combined with the humidity (= the amount of water in the air):
The weather has been horrible, with temperatures approaching 34 C and the humidex making it feel like it's over 40 C outside.
Today we have a humidex somewhere near 40 degrees which makes everything, including us, feel sort of like limp lettuce.
The current formula for determining the humidex was developed by Masterton and Richardson in 1979.
There's nothing I hate more than waking up at 8am and hearing that the humidex is already through the roof.
A humidex of 30 to 39 will mean some discomfort.
