36.2Humidex
Some Discomfort
Increase water intake. Monitor workers and post heat alert notices.
How This Calculator Works
This calculator uses the standard Canadian humidex formula, the same method used by the OHCOW humidex-based heat stress calculator referenced by the CCOHS. It derives the vapour pressure from the air temperature and relative humidity to compute the perceived temperature.
Humidex Response Levels
| Humidex Range | Comfort Level | Recommended Action |
|---|---|---|
| Below 30 | Comfortable | No discomfort — normal activity |
| 30 – 39 | Some Discomfort | Increase water intake, monitor workers |
| 40 – 45 | Great Discomfort | Reduce physical activity, enforce work-rest cycles |
| Above 45 | Dangerous | Avoid all unnecessary exertion, risk of heat stroke |
| Above 54 | Heat Stroke Imminent | Evacuate or cease all work immediately |
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