Humidity is the amount of water vapor in air. It depends on
many factors such as: geographical location, ambient
temperature, atmospheric pressure and wind. Humidity can be
described in several ways. Absolute humidity is the total
amount of water vapor in a given volume and is typically
expressed in g/m³. Relative Humidity (RH) is defined as the
ratio of the absolute vapor pressure (AVP) to the saturation
vapor pressure (SVP) in a given volume