Thermal Comfort Index Map

The Thermal Comfort Index corroborates air temperature with relative humidity (the amount of water vapors from a gaseous mixture of air and water) in order to determine an apparent temperature – that which is felt by the human body.

Normally, the body gets colder by perspiration – a process during which water evaporates, and the amount of retained heat diminishes. When relative humidity is high, the ratio for water evaporation decreases. This means a slower cooling of the body, which keeps in more heat than it would do in a dry environment. The critical threshold is 80. Wherever this value is reached or even topped, the population should take adequate precautions.