| Gas Nitrogen Oxygen Argon Carbon dioxide Neon Helium Methane Krypton Hydrogen Xenon |
| Percentage 78.084% 20.9476% 0.934% 0.0335% 0.001818% 0.000524% 0.00015% 0.000114% 0.00005% 0.0000087% |
| Atmospheric Composition |
| This is the composition of the air in the Earth's atmosphere, specifically at sea level at 15 degrees Celsius. Note that nitrogen and oxygen are N2 and O2, not N and O. |
Atmosphere ---------------- |