At a certain cooler temperature (the "dew point") which depends upon the amount of water vapor in the air, the water vapor condenses into tiny, visible water droplets.
(the "dew point; depends; upon the amount of water) (the water vapor; condenses; into tiny, visible water droplets; L:in the air)
the "dew point the water vapor
depends condenses
upon the amount of water
into tiny, visible water droplets L:in the air