What happens when air becomes full of water vapor?

it becomes a mist either way or it evaporates really fast then turns back into the two gases : hygergon and,oxygen. hope that helps!! == Precipitation. Mist and fog are just low lying clouds, so yeah that could happen.

Here in North Carolina, the weather is like that over half of the year, as humidity (moist air) is so bad that you can practically drink the air, especially in the summer, when humidity is at an unbearable 98%!