Where Does Fog Come From? | Weather Science | SciShow Kids?

Fog happens when warm air meets cool air, making little water droplets float around like a sleepy cloud on the ground.

Imagine you're taking a hot shower, and suddenly you open the bathroom door to a cold room. The warm, wet air from the shower hits the cool air outside, and poof, you can’t see very far because tiny drops of water have formed in the air. That’s like fog!

Warm air holds more water vapor, which is invisible steam. When that warm air meets cool air, it can't hold all the water vapor anymore, so the extra turns into tiny droplets. These droplets are so small they float around in the air, making everything look hazy, just like fog!

Clouds are formed when water vapor turns into droplets high up in the sky. Fog is just like that, but it happens close to the ground. So next time you see fog, think of it as a sleepy cloud hanging out near your feet!