humidex
/ˈhjuːmɪdɛks/
noun
- A number used in Canada to describe how hot it feels when humidity is combined with air temperature.
- The humidex reached 40 today, so the city opened cooling centers.
- When the humidex is high, you should drink plenty of water and rest in the shade.
- Meteorologists use the humidex to warn people about dangerous heat.