When water vapor reaches its dew point it then becomes saturated. Either the vapor falls as rain, or if it is a cool clear night it forms as dew on surfaces. if the surface is cold enough it can also form as frost.
The water vapor turns into liquid water.
when water vapour is cooled it condenses and falls as rain
it goes threw a cycle
it turns back from a gas to a liquid
The most obvious answer is that the vapor will condense rapidly, even possibly before your eyes. By condense, I mean that the vapor will quickly turn into a liquid state. It will then freeze into a solid state (ice).
The process is called condensation. It occurs when the water is cooled below its boiling point due to the temperature in the environment cooling it.
The capacity becomes smaller, and the water condenses out (the source of fog).
As water vapor cools to the dew point it converts from a gas back to a liquid.
When water vapor is cooled it turns into liquid.
condenses
It cooled.
Dew point is supposed to be the temperature that water vapor is cooled to. If the air is colder than the condensation point (dew point) then it isn't being cooled.