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Nitrous oxide (N₂O) in 2025 (global mean)
Annual mean338.86 ppb
vs previous year+1.14 ppb
Rank of increase5 / 24
Max − min within year1.21 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 338.43 ppb | +0.97 |
| Feb | 338.51 ppb | +0.97 |
| Mar | 338.59 ppb | +1.03 |
| Apr | 338.64 ppb | +1.04 |
| May | 338.65 ppb | +0.99 |
| Jun | 338.67 ppb | +0.98 |
| Jul | 338.75 ppb | +1.09 |
| Aug | 338.85 ppb | +1.23 |
| Sep | 338.98 ppb | +1.31 |
| Oct | 339.20 ppb | +1.35 |
| Nov | 339.46 ppb | +1.38 |
| Dec | 339.64 ppb | +1.35 |
+1.13 ppb
+1.28 ppb
+1.34 ppb
+1.07 ppb
+1.03 ppb
+1.14 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.