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Carbon dioxide (CO₂): global average concentration

Latest month427.62 ppmJun 2026

vs 12 months earlier+1.72 ppm

vs 1979×1.261979→2025

Largest yearly rise2024+3.44 ppm

Yearly increase

2001+1.60 ppm

2002+2.02 ppm

2003+2.56 ppm

2004+1.81 ppm

2005+2.04 ppm

2006+2.17 ppm

2007+1.75 ppm

2008+2.12 ppm

2009+1.48 ppm

2010+2.26 ppm

2011+1.87 ppm

2012+2.03 ppm

2013+2.75 ppm

2014+1.95 ppm

2015+2.31 ppm

2016+3.42 ppm

2017+2.15 ppm

2018+2.39 ppm

2019+2.46 ppm

2020+2.37 ppm

2021+2.26 ppm

2022+2.38 ppm

2023+2.27 ppm

2024+3.44 ppm

2025+2.83 ppm

Annual means

Year	Annual mean	Change
2025	425.62 ppm	+2.83
2024	422.79 ppm	+3.44
2023	419.35 ppm	+2.27
2022	417.08 ppm	+2.38
2021	414.70 ppm	+2.26
2020	412.44 ppm	+2.37
2019	410.07 ppm	+2.46
2018	407.61 ppm	+2.39
2017	405.22 ppm	+2.15
2016	403.07 ppm	+3.42
2015	399.65 ppm	+2.31
2014	397.34 ppm	+1.95
2013	395.40 ppm	+2.75
2012	392.65 ppm	+2.03
2011	390.62 ppm	+1.87
2010	388.76 ppm	+2.26
2009	386.50 ppm	+1.48
2008	385.02 ppm	+2.12
2007	382.90 ppm	+1.75
2006	381.15 ppm	+2.17
2005	378.98 ppm	+2.04
2004	376.94 ppm	+1.81
2003	375.14 ppm	+2.56
2002	372.58 ppm	+2.02
2001	370.57 ppm	+1.60
2000	368.96 ppm	+1.17
1999	367.79 ppm	+2.10
1998	365.70 ppm	+2.66
1997	363.04 ppm	+1.10
1996	361.93 ppm	+1.76
1995	360.18 ppm	+1.85
1994	358.33 ppm	+1.49
1993	356.84 ppm	+0.74
1992	356.09 ppm	+0.70
1991	355.40 ppm	+1.34
1990	354.06 ppm	+1.27
1989	352.79 ppm	+1.63
1988	351.16 ppm	+2.48
1987	348.68 ppm	+1.71
1986	346.97 ppm	+1.43
1985	345.54 ppm	+1.46
1984	344.07 ppm	+1.54
1983	342.53 ppm	+1.67
1982	340.86 ppm	+0.75
1981	340.11 ppm	+1.19
1980	338.91 ppm	+2.06
1979	336.85 ppm	–

NOAA GML global mean from the marine surface network (monthly). Recent values are preliminary.