What is the Humidex?
The Humidex combines air temperature and relative humidity to tell us how hot it feels.
It may help to think of the Humidex like you would the wind-chill index in winter. Wind chill combines the air temperature with the wind speed to determine how cold it feels.
Guide to Summer Comfort
Range of Humidex |
Degree of Comfort |
Less than 29 Celsius |
No discomfort |
30 to 39 Celsius |
Some discomfort |
40 to 45 Celsius |
Great discomfort; avoid exertion |
Above 45 Celsius |
Dangerous |
Above 54 Celsius |
Heat stroke imminent |
Source: National Centre for Environmental Health.
