Climate TrendsHome › Greenhouse gases › Carbon dioxide (CO₂)
Carbon dioxide (CO₂) in 1993 (global mean)
Annual mean356.84 ppm
vs previous year+0.74 ppm
Rank of increase45 / 46
Max − min within year3.98 ppm
By month
| Month | Concentration | vs same month last year |
|---|---|---|
| Jan | 357.20 ppm | +0.66 |
| Feb | 357.54 ppm | +0.65 |
| Mar | 357.96 ppm | +0.70 |
| Apr | 358.42 ppm | +0.66 |
| May | 358.38 ppm | +0.55 |
| Jun | 357.35 ppm | +0.48 |
| Jul | 355.73 ppm | +0.55 |
| Aug | 354.44 ppm | +0.78 |
| Sep | 354.47 ppm | +0.90 |
| Oct | 355.71 ppm | +0.90 |
| Nov | 356.96 ppm | +0.97 |
| Dec | 357.86 ppm | +1.12 |
+2.48 ppm
+1.63 ppm
+1.27 ppm
+1.34 ppm
+0.70 ppm
+0.74 ppm
+1.49 ppm
+1.85 ppm
+1.76 ppm
+1.10 ppm
+2.66 ppm
Bars: yearly increase in the surrounding years. NOAA GML global monthly means.