Humidex: the “unbearable heat” index
It’s not the heat, as they say, it’s the humidity. In fact, humidity changes our perception of how hot or cold it is. The higher the mercury rises, the more moisture in the air and the hotter it can feel. The humidex measures the combined effects of heat and humidity regarding our comfort (or discomfort). A humidex number of over 40 is considered extremely high, with serious risks of heat stroke and sunstroke.
