Pick something and launch it into the sky! Watch what happens as you climb through the layers.
👆 Tap a layer to explore it!
Every breath you take is this mix of gases:
Drag the sliders and watch how air makes different kinds of clouds!
Your real air is fetched from a free weather service (open-meteo) — no account needed. If you're offline, this button politely gives up!
Earth's gravity pulls everything toward its center — including all the air around us. The closer you are to Earth, the harder gravity tugs.
This means air at sea level is squeezed tight by all the air above it pushing down. That's why we call that pressure "sea-level pressure." As you go higher up, there's less air on top, so the pressure gets lower and lower…
Listen to the story about our sky! Tap play and follow along as I read — I'll turn the pages for you.