What in percentage represent normal humidity? If humidity is 89% what does that mean?

Answer 1

Good question. As far as I know there is no such thing as normal humidity, unless you are thinking of average humidity which of course varies by location and by season. Now a humidity of 89% if it is a relative humidity means the air holds 89% of the the water vapor it is able to hold before becoming saturated, i.e. 100% humid. While the temperature is a measure of how much moisture the air may hold, the dew-point temperature is a measure of how much moisture the air does hold, so that when the dew-point equals the temperature the air is saturated.

Answer 2

There are different ways in which the humidity of air can be expressed.They are known as parameters and are used for denoting the water content of the atmosphere.Absolute humidity,specific humidity, humidity mixing ratio,relative humidity and dew point are the parameters.
Relative humidity is the one which is commonly used.It is defined as the ratio of the amount of water vapour present in the air,to the amount of water vapour required to saturate the air at a particular temperature.This is expressed as a fraction or as a percentage.When it is expressed in percentage it is called Relative humidity.In short, Relative humidity is known as the degree of saturation.For a particular quantity of air at a particular temperature,there is a definite maximum amount of water vapour which it can hold.When the air is holding this maximum amount of water vapour,then the humidity value is taken as 100% and the air is said to be saturated.When the air is holding only 89% of this maximum value of water vapour at that particular temperature, then the Relative humidity value is taken as 89%.

Answer 3

What those other guy guys said is good and I will not doubt them one bit. But as far as I know 50% RH is about avg. 90% and above and its real close to raining or is raining. Less then 50% and stuff start to dry out real quick. 35% and below makes for big fire danger.