Our indoor and outdoor sensors measure relative humidity.
According to Wikipedia, relative humidity is the ratio of the partial pressure of water vapor to the equilibrium vapor pressure of water at a given temperature. Relative humidity depends on temperature and the pressure of the system of interest. The same amount of water vapor results in higher relative humidity in cool air than warm air. To read more
If the Outdoor Module is exposed to rain, or any other water sources the humidity sensor can temporarily get saturated in Humidity (100%). Generally, you have to wait a few hours for it to take normal measurements again. For this reason, we recommend you to protect the Outdoor Module from rain.
Did you know?
Dry environments can provoke irritations of the throat and nose. Indoors, the comfort range lies between 30% and 70%.
Have you noticed?
If you blow into the Station, the humidity level goes up!