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Top 5 most abundant gases in Earth's atmosphere

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The 5 most abundant gases in Earth's atmosphere by share of dry air by volume: Nitrogen (N2), Oxygen (O2), Argon (Ar), Carbon dioxide (CO2), Neon (Ne).

Snapshot · 2026-09-01

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  1. 1

    Nitrogen (N2)

    78.084% (780,840 ppm)

  2. 2

    Oxygen (O2)

    20.946% (209,460 ppm)

  3. 3

    Argon (Ar)

    0.9340% (9,340 ppm)

  4. 4

    Carbon dioxide (CO2)

    0.0424% (423.9 ppm, 2024)

  5. 5

    Neon (Ne)

    0.00182% (18.2 ppm)