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Carbon dioxide (CO₂) in 2026 (global mean)
Annual mean–partial year
vs previous year–
Rank of increase–
Max − min within year1.05 ppm
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 428.02 ppm | +2.01 |
| Feb | 428.44 ppm | +1.98 |
| Mar | 428.48 ppm | +1.82 |
| Apr | 428.67 ppm | +1.64 |
| May | 428.59 ppm | +1.55 |
| Jun | 427.62 ppm | +1.72 |
| Jul | – | – |
| Aug | – | – |
| Sep | – | – |
| Oct | – | – |
| Nov | – | – |
| Dec | – | – |
+2.26 ppm
+2.38 ppm
+2.27 ppm
+3.44 ppm
+2.83 ppm
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.