Why does fog appear in the morning?
Talk about it together
What do you think looks different when fog covers your yard or street?
What about...?
Ask your child's own question
Transcript
Have you ever looked outside in the morning and seen a soft, cloudy mist?
At night, the ground gets cooler. The air close to it cools down too.
Air holds tiny bits of water we cannot see. Cool air lets those bits join into tiny drops.
The tiny drops float together near the ground. That soft cloud is called fog.
So that's why fog can appear in the morning. Cool air turns unseen water into tiny floating drops.
For grown-ups: the science
Fog appears when cool morning air makes unseen water turn into tiny drops that float near the ground.
Fog is a cloud at ground level. It often forms overnight or near dawn when the ground cools the nearby air to its dew point, causing water vapor to condense into tiny suspended droplets. Other types of fog can form when warm, moist air moves over a cooler surface.