To make an atmosphere in Little Alchemy 2, follow these steps:

1. Open the Little Alchemy 2 game on your preferred device.
2. Combine two basic elements, namely "air" and "pressure," to create "atmosphere."
3. To create air, drag the "air" element onto the playing board.
4. To create pressure, drag the "earth" element onto the playing board.
5. Combine the air and pressure elements to create an "atmosphere" icon.

You should now have an "atmosphere" icon on your playing board. Congratulations, you have successfully made an "atmosphere" in Little Alchemy 2! Also read: How to Make a Wild Animal in Little Alchemy