| Name | relative humidity | Abbreviation | rh | Unit | % |
| Definition | The ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at the same temperature on a height level. |
| Validity | Instantaneous |
| Comment |
GRIB2 definition
| Parameter | ||
|---|---|---|
| Discipline | 0 | meteorological products |
| Parameter Category | 1 | moisture |
| Parameter Number | 1 | relative humidity |
| Level | ||
|---|---|---|
| Type of first fixed surface | 103 | specified height level above ground (m) |
| Scale factor of first fixed surface | 0 | |
| Scaled value of first fixed surface | value in m | |
| Type of second fixed surface | all bits to 1 | missing |
| Scale factor of second fixed surface | all bits to 1 | missing |
| Scaled value of second fixed surface | = all bits to 1 | missing |