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Definition of humidex
humidex
/ˈhjuːmɪdɛks/
hu · mi · dex
Plural:humidexes
humidex Lexical Profile
CEFR
C1
Grade
8
Tier
3
Usage
Rare
humidex Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
Canadian A meteorological index used to describe how hot the weather feels to the average person, calculated by combining air temperature and dew point or humidity.
Example
"Although the actual temperature was thirty degrees, the high humidity pushed the humidex up to forty."
Antonyms
View all antonyms for humidexWord Nuance & Usage
The humidex is primarily used in Canadian meteorology; in the United States, the equivalent measurement is called the heat index.
• Nearby Words
Word Origin & Etymology
A portmanteau of the words 'humidity' and 'index', first developed and introduced by the Meteorological Service of Canada in 1965.
Cite this Entry
Wordmom. (2026). Definition of Humidex. In Wordmom Dictionary. Retrieved Oct 14, 2026, from https://wordmom.com/dictionary/humidex