Clouds are formed when warm air rises, is heated and expands, then the water vapor present in the air cools and condenses, and attaches to particles in the air.
Clouds are formed when moist air, typically from bodies of water, is heated and rises. As the air rises, it expands and cools. The cooling causes water vapor within the air to condense and form tiny water droplets or ice crystals. These droplets or crystals then attach to particles in the air such as dust or pollution, forming clouds.
