This is called the "relative humidity."
It is absolute humidity.
relative humidity
Humidity is the amount of water vapor at any given time and relative humidity is the amount of water vapor in the air compared to the greatest amount it can hold at that air temperature.
Saturated air is air that has all the water vapor that it can hold.
saturated
The amount of actual water vapor in the air to how much saturated water vapor could be in the air.
Relative humidity is a comparison of the amount of moisture that air is holding compared to the maximum amount it could hold at a given temperature. If it's holding all that it can, the relative humidity is 100%.
The current water vapor content of the air (in question) AND the maximum amount of water vapor that it could carry.
It is saturated.
It is saturated.
It is saturated.
The ratio of a partial pressure of water vapor in an air water mixture to the saturated vapor.
It is absolute humidity.
It is saturated.
Saturated air is more dense.
The amount of moister in the air is called the relative humidity. It is the ratio of the partial pressure of water vapor in an air water mixture to the saturated vapor pressure of water.
Any addition of thermal energy to a saturated liquid will cause it to vaporize. Any subtraction of thermal energy from a saturated vapor will cause it to condense.