How does fog form?

Fog happens when water vapor in the air turns into tiny droplets, making it hard to see.

Imagine you're taking a hot shower on a cold morning, the steam that comes off your body is like water vapor. Now picture the air outside as a big, invisible sponge. When the air gets cool enough, it can't hold all of its water vapor anymore, so the extra turns into tiny droplets, just like when you leave a glass of cold soda out on a hot day and see little drops forming on the outside.

Fog is like a tiny cloud that comes down to touch the ground. When the air near the ground gets cool, especially in the early morning, it acts like a sponge that’s been squeezed too much, and all those tiny droplets make the air look hazy or white.

If you’ve ever walked outside on a foggy day, it feels like you’re walking through a soft blanket. You can’t see far ahead, but you can still feel the air around you, just like when you walk into a room that’s full of steam from a hot bath.