relative humidity
relative humidity, ratio of the actual vapour pressure of water in the air to that in air saturated with water vapour; it is often expressed as a percentage. See humidity.
Citation Information
Article Title:
relative humidity
Website Name:
Encyclopaedia Britannica
Publisher:
Encyclopaedia Britannica, Inc.
Date Published:
03 June 2021
Access Date:
February 22, 2025