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Methane (CH₄) in 2018 (global mean)
Annual mean1,857.4 ppb
vs previous year+7.8 ppb
Rank of increase19 / 41
Max − min within year17.2 ppb
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 1,854.6 ppb | +4.8 |
| Feb | 1,855.1 ppb | +6.5 |
| Mar | 1,857.0 ppb | +8.7 |
| Apr | 1,856.8 ppb | +8.2 |
| May | 1,854.8 ppb | +7.5 |
| Jun | 1,851.8 ppb | +9.0 |
| Jul | 1,849.0 ppb | +8.8 |
| Aug | 1,851.9 ppb | +7.3 |
| Sep | 1,860.4 ppb | +7.7 |
| Oct | 1,865.7 ppb | +7.7 |
| Nov | 1,866.3 ppb | +7.7 |
| Dec | 1,866.0 ppb | +9.4 |
+5.3 ppb
+9.2 ppb
+11.6 ppb
+9.0 ppb
+6.4 ppb
+7.8 ppb
+9.2 ppb
+12.2 ppb
+16.0 ppb
+16.2 ppb
+10.4 ppb
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.