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Nitrous oxide (N₂O) in 2018 (global mean)
Annual mean330.92 ppb
vs previous year+1.17 ppb
Rank of increase3 / 24
Max − min within year1.23 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 330.45 ppb | +0.99 |
| Feb | 330.60 ppb | +1.08 |
| Mar | 330.69 ppb | +1.15 |
| Apr | 330.71 ppb | +1.18 |
| May | 330.70 ppb | +1.19 |
| Jun | 330.70 ppb | +1.12 |
| Jul | 330.75 ppb | +1.05 |
| Aug | 330.88 ppb | +1.09 |
| Sep | 331.08 ppb | +1.21 |
| Oct | 331.29 ppb | +1.28 |
| Nov | 331.48 ppb | +1.33 |
| Dec | 331.68 ppb | +1.39 |
+0.89 ppb
+1.15 ppb
+1.08 ppb
+0.78 ppb
+0.79 ppb
+1.17 ppb
+0.96 ppb
+1.13 ppb
+1.28 ppb
+1.34 ppb
+1.07 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.