A big fat zero, as there is very little, if any water on Mercury.
Having no atmosphere, Pluto would have a humidity of zero.
no! it doesn't have an atmosphere to contain humidity.
the average humidity on venus is about 70%
average humidity is 60% in Tacoma.
what is the average of humidity in Dallas, Texas
The average humidity on the moon is about 13 grams. The humidity on the moon is not affected by the temperature.
this is the current humidity
there is no humidity due to no water.
Nashville Tennessee has an average humidity of 70% over the year.