Relative (air) humidity

The relative humidity specifies the actual measured water vapour concentration in the air and refers to the maximum saturation of 100 %. Thus, the usual indication is in percent (e.g. 65 %), of course, the decimal form (e.g. 0.65) is possible as well. The relative (air) humidity depends on the temperature, i.e. the temperature must always be considered respectively specified for comparative measurements.