Because air is cooler at higher altitude in the troposphere, water vapor cools as it rises high in the atmosphere and transforms into water droplets by a process called condensation. The water droplets that form make up clouds.

Where can water droplets form?

Condensation can also produce water droplets on the outside of soda cans or glasses of cold water. When warm air hits the cold surface, it reaches its dew point and condenses. This leaves droplets of water on the glass or can. When a pocket of air becomes full of water vapor, clouds form.

Do water droplets form humidity?

The droplets formed as a result of condensation. Condensation is the process by which a gas, such as water vapor, becomes a liquid. For liquid water droplets to form, the air must be saturated, or have a relative humidity of 100%.