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Methane (CH₄) in 2021 (global mean)
Annual mean1,894.9 ppb
vs previous year+16.0 ppb
Rank of increase2 / 41
Max − min within year23.3 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 1,888.6 ppb | +15.6 |
| Feb | 1,886.6 ppb | +14.3 |
| Mar | 1,888.0 ppb | +13.6 |
| Apr | 1,890.8 ppb | +15.0 |
| May | 1,891.3 ppb | +16.9 |
| Jun | 1,888.1 ppb | +16.1 |
| Jul | 1,886.0 ppb | +14.5 |
| Aug | 1,892.3 ppb | +15.9 |
| Sep | 1,902.4 ppb | +17.8 |
| Oct | 1,907.9 ppb | +17.9 |
| Nov | 1,909.3 ppb | +17.8 |
| Dec | 1,908.0 ppb | +17.0 |
+9.0 ppb
+6.4 ppb
+7.8 ppb
+9.2 ppb
+12.2 ppb
+16.0 ppb
+16.2 ppb
+10.4 ppb
+8.0 ppb
+6.5 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.