Question

What is the maximum amount of water vapor air can hold at a given temperature called ?

Answer 1

see below

Explanation:

the temperature at wich you can contain the maxima quontity of water vapour is called dew or wet bulb or saturation temperature and is and a part is segned with a blu line in the diagram in figure. Under this temperature (if you go on the left over the line, starting from point 1) vapour condensates. This quantity (indicated on the scale on the right) changes with temperature according to the psicimetric Mollier's diagramm. If you warm up air of point 2 long the red line, the humidity % decreases and for example, in point 3 it is 50% (while it is 100% in point 2)

Answer 2

Saturation point

Explanation:

The maximum amount of water vapor the air can hold at a given temperature is known as the Saturation Point, it is also identified as 100% relative humidity.

https://en.wikipedia.org/wiki/Relative_humidity

The above chart shows the absolute humidity on the side, in grams of water per kilogram of air. The value at the bottom is the temperature. The curved red line indicates the saturation point. So if you had air that was 15 degrees, the amount of water vapour that would be 100 percent relative humidity or the saturation point would be 10 grams of water vapour per kilogram of air.