Atmospheric Carbon Dioxide (CO2)

420.15 PPM
Average Atmospheric CO2 Concentration
420.38 PPM
Atmospheric CO2 Concentration Trend

Monthly Averages & Trends of Atmospheric CO2 Between 1979-2023

Between 1979-2023, the concentration of carbon dioxide (CO2) in Earth's atmosphere has increased from an average of 336.56 PPM to 420.15 PPM (parts per million), a 24.84% increase during a 44 year time span.

Year / Month Average Trend
1979 / 01 336.56 PPM 335.92 PPM
1979 / 02 337.29 PPM 336.25 PPM
1979 / 03 337.88 PPM 336.51 PPM
1979 / 04 338.32 PPM 336.72 PPM
1979 / 05 338.26 PPM 336.71 PPM
1979 / 06 337.38 PPM 336.61 PPM
1979 / 07 335.56 PPM 336.41 PPM
1979 / 08 334.37 PPM 336.65 PPM
1979 / 09 335.02 PPM 337.4 PPM
1979 / 10 336.36 PPM 337.71 PPM
1979 / 11 337.36 PPM 337.68 PPM
1979 / 12 337.85 PPM 337.62 PPM
1980 / 01 338.55 PPM 337.91 PPM
1980 / 02 339.26 PPM 338.23 PPM
1980 / 03 339.59 PPM 338.23 PPM
1980 / 04 339.99 PPM 338.39 PPM
1980 / 05 340.44 PPM 338.88 PPM
1980 / 06 339.99 PPM 339.22 PPM
1980 / 07 338.44 PPM 339.28 PPM
1980 / 08 337.22 PPM 339.5 PPM
1980 / 09 337.05 PPM 339.44 PPM
1980 / 10 337.83 PPM 339.17 PPM
1980 / 11 338.93 PPM 339.26 PPM
1980 / 12 339.64 PPM 339.41 PPM
1981 / 01 340.18 PPM 339.55 PPM
1981 / 02 340.75 PPM 339.71 PPM
1981 / 03 341.38 PPM 340.01 PPM
1981 / 04 341.68 PPM 340.08 PPM
1981 / 05 341.43 PPM 339.88 PPM
1981 / 06 340.63 PPM 339.86 PPM
1981 / 07 339.23 PPM 340.07 PPM
1981 / 08 338.08 PPM 340.37 PPM
1981 / 09 337.98 PPM 340.36 PPM
1981 / 10 339.07 PPM 340.42 PPM
1981 / 11 340.18 PPM 340.5 PPM
1981 / 12 340.75 PPM 340.51 PPM
1982 / 01 341.37 PPM 340.74 PPM
1982 / 02 341.95 PPM 340.9 PPM
1982 / 03 342.23 PPM 340.84 PPM
1982 / 04 342.51 PPM 340.91 PPM
1982 / 05 342.36 PPM 340.82 PPM
1982 / 06 341.49 PPM 340.72 PPM
1982 / 07 339.75 PPM 340.61 PPM
1982 / 08 338.11 PPM 340.4 PPM
1982 / 09 338.16 PPM 340.54 PPM
1982 / 10 339.61 PPM 340.97 PPM
1982 / 11 340.95 PPM 341.27 PPM
1982 / 12 341.77 PPM 341.54 PPM
1983 / 01 342.37 PPM 341.72 PPM
1983 / 02 342.75 PPM 341.71 PPM
1983 / 03 343.04 PPM 341.7 PPM
1983 / 04 343.51 PPM 341.94 PPM
1983 / 05 343.84 PPM 342.3 PPM
1983 / 06 343.5 PPM 342.71 PPM
1983 / 07 342.14 PPM 342.9 PPM
1983 / 08 340.62 PPM 342.85 PPM
1983 / 09 340.53 PPM 342.94 PPM
1983 / 10 341.75 PPM 343.15 PPM
1983 / 11 342.83 PPM 343.19 PPM
1983 / 12 343.49 PPM 343.26 PPM
1984 / 01 344.32 PPM 343.66 PPM
1984 / 02 344.82 PPM 343.82 PPM
1984 / 03 344.96 PPM 343.6 PPM
1984 / 04 345.19 PPM 343.56 PPM
1984 / 05 345.33 PPM 343.78 PPM
1984 / 06 344.57 PPM 343.8 PPM
1984 / 07 343.2 PPM 344.02 PPM
1984 / 08 342.21 PPM 344.51 PPM
1984 / 09 342.13 PPM 344.57 PPM
1984 / 10 342.99 PPM 344.37 PPM
1984 / 11 344.16 PPM 344.46 PPM
1984 / 12 345.0 PPM 344.72 PPM
1985 / 01 345.35 PPM 344.66 PPM
1985 / 02 345.8 PPM 344.78 PPM
1985 / 03 346.64 PPM 345.31 PPM
1985 / 04 346.94 PPM 345.33 PPM
1985 / 05 346.78 PPM 345.2 PPM
1985 / 06 346.26 PPM 345.47 PPM
1985 / 07 344.92 PPM 345.75 PPM
1985 / 08 343.41 PPM 345.73 PPM
1985 / 09 343.37 PPM 345.82 PPM
1985 / 10 344.64 PPM 346.03 PPM
1985 / 11 345.79 PPM 346.11 PPM
1985 / 12 346.54 PPM 346.25 PPM
1986 / 01 347.11 PPM 346.42 PPM
1986 / 02 347.34 PPM 346.35 PPM
1986 / 03 347.71 PPM 346.38 PPM
1986 / 04 348.22 PPM 346.61 PPM
1986 / 05 348.32 PPM 346.75 PPM
1986 / 06 347.76 PPM 346.99 PPM
1986 / 07 346.3 PPM 347.14 PPM
1986 / 08 344.92 PPM 347.22 PPM
1986 / 09 344.86 PPM 347.26 PPM
1986 / 10 346.04 PPM 347.41 PPM
1986 / 11 347.3 PPM 347.63 PPM
1986 / 12 347.76 PPM 347.46 PPM
1987 / 01 348.02 PPM 347.25 PPM
1987 / 02 348.57 PPM 347.47 PPM
1987 / 03 349.29 PPM 347.88 PPM
1987 / 04 349.98 PPM 348.3 PPM
1987 / 05 350.26 PPM 348.69 PPM
1987 / 06 349.48 PPM 348.81 PPM
1987 / 07 347.86 PPM 348.85 PPM
1987 / 08 346.61 PPM 349.01 PPM
1987 / 09 346.7 PPM 349.14 PPM
1987 / 10 347.97 PPM 349.36 PPM
1987 / 11 349.25 PPM 349.58 PPM
1987 / 12 350.21 PPM 349.88 PPM
1988 / 01 350.91 PPM 350.13 PPM
1988 / 02 351.47 PPM 350.36 PPM
1988 / 03 351.85 PPM 350.39 PPM
1988 / 04 352.29 PPM 350.52 PPM
1988 / 05 352.46 PPM 350.83 PPM
1988 / 06 351.76 PPM 351.07 PPM
1988 / 07 350.28 PPM 351.27 PPM
1988 / 08 349.1 PPM 351.56 PPM
1988 / 09 349.27 PPM 351.79 PPM
1988 / 10 350.44 PPM 351.85 PPM
1988 / 11 351.61 PPM 351.98 PPM
1988 / 12 352.46 PPM 352.16 PPM
1989 / 01 353.0 PPM 352.18 PPM
1989 / 02 353.46 PPM 352.33 PPM
1989 / 03 354.01 PPM 352.58 PPM
1989 / 04 354.38 PPM 352.6 PPM
1989 / 05 354.19 PPM 352.51 PPM
1989 / 06 353.26 PPM 352.57 PPM
1989 / 07 351.56 PPM 352.59 PPM
1989 / 08 350.21 PPM 352.7 PPM
1989 / 09 350.56 PPM 353.09 PPM
1989 / 10 351.85 PPM 353.28 PPM
1989 / 11 353.03 PPM 353.39 PPM
1989 / 12 353.9 PPM 353.58 PPM
1990 / 01 354.46 PPM 353.69 PPM
1990 / 02 354.87 PPM 353.82 PPM
1990 / 03 355.19 PPM 353.76 PPM
1990 / 04 355.5 PPM 353.73 PPM
1990 / 05 355.4 PPM 353.73 PPM
1990 / 06 354.32 PPM 353.67 PPM
1990 / 07 352.71 PPM 353.81 PPM
1990 / 08 351.58 PPM 354.09 PPM
1990 / 09 351.8 PPM 354.31 PPM
1990 / 10 353.19 PPM 354.59 PPM
1990 / 11 354.43 PPM 354.68 PPM
1990 / 12 355.18 PPM 354.75 PPM
1991 / 01 355.76 PPM 354.96 PPM
1991 / 02 356.19 PPM 355.1 PPM
1991 / 03 356.68 PPM 355.25 PPM
1991 / 04 357.19 PPM 355.44 PPM
1991 / 05 357.11 PPM 355.48 PPM
1991 / 06 356.17 PPM 355.56 PPM
1991 / 07 354.53 PPM 355.65 PPM
1991 / 08 353.05 PPM 355.55 PPM
1991 / 09 352.93 PPM 355.45 PPM
1991 / 10 354.01 PPM 355.41 PPM
1991 / 11 355.16 PPM 355.38 PPM
1991 / 12 355.95 PPM 355.49 PPM
1992 / 01 356.52 PPM 355.71 PPM
1992 / 02 356.89 PPM 355.78 PPM
1992 / 03 357.26 PPM 355.78 PPM
1992 / 04 357.75 PPM 355.96 PPM
1992 / 05 357.82 PPM 356.19 PPM
1992 / 06 356.87 PPM 356.28 PPM
1992 / 07 355.19 PPM 356.34 PPM
1992 / 08 353.69 PPM 356.24 PPM
1992 / 09 353.58 PPM 356.14 PPM
1992 / 10 354.8 PPM 356.21 PPM
1992 / 11 355.98 PPM 356.2 PPM
1992 / 12 356.74 PPM 356.27 PPM
1993 / 01 357.21 PPM 356.37 PPM
1993 / 02 357.55 PPM 356.39 PPM
1993 / 03 357.96 PPM 356.52 PPM
1993 / 04 358.43 PPM 356.66 PPM
1993 / 05 358.38 PPM 356.73 PPM
1993 / 06 357.34 PPM 356.68 PPM
1993 / 07 355.72 PPM 356.74 PPM
1993 / 08 354.44 PPM 356.9 PPM
1993 / 09 354.47 PPM 357.05 PPM
1993 / 10 355.7 PPM 357.19 PPM
1993 / 11 356.95 PPM 357.29 PPM
1993 / 12 357.85 PPM 357.49 PPM
1994 / 01 358.48 PPM 357.62 PPM
1994 / 02 359.01 PPM 357.85 PPM
1994 / 03 359.36 PPM 357.91 PPM
1994 / 04 359.71 PPM 357.93 PPM
1994 / 05 359.74 PPM 358.07 PPM
1994 / 06 358.81 PPM 358.1 PPM
1994 / 07 357.28 PPM 358.27 PPM
1994 / 08 356.06 PPM 358.56 PPM
1994 / 09 356.02 PPM 358.67 PPM
1994 / 10 357.26 PPM 358.8 PPM
1994 / 11 358.69 PPM 359.03 PPM
1994 / 12 359.55 PPM 359.15 PPM
1995 / 01 360.13 PPM 359.27 PPM
1995 / 02 360.61 PPM 359.51 PPM
1995 / 03 361.08 PPM 359.7 PPM
1995 / 04 361.55 PPM 359.85 PPM
1995 / 05 361.47 PPM 359.84 PPM
1995 / 06 360.61 PPM 359.92 PPM
1995 / 07 358.99 PPM 359.99 PPM
1995 / 08 357.73 PPM 360.2 PPM
1995 / 09 358.05 PPM 360.64 PPM
1995 / 10 359.42 PPM 360.89 PPM
1995 / 11 360.77 PPM 361.04 PPM
1995 / 12 361.65 PPM 361.2 PPM
1996 / 01 362.14 PPM 361.23 PPM
1996 / 02 362.5 PPM 361.32 PPM
1996 / 03 362.82 PPM 361.4 PPM
1996 / 04 363.14 PPM 361.42 PPM
1996 / 05 363.29 PPM 361.68 PPM
1996 / 06 362.88 PPM 362.23 PPM
1996 / 07 361.57 PPM 362.61 PPM
1996 / 08 360.07 PPM 362.58 PPM
1996 / 09 359.7 PPM 362.31 PPM
1996 / 10 360.67 PPM 362.15 PPM
1996 / 11 361.78 PPM 362.09 PPM
1996 / 12 362.63 PPM 362.19 PPM
1997 / 01 363.28 PPM 362.34 PPM
1997 / 02 363.65 PPM 362.47 PPM
1997 / 03 364.03 PPM 362.62 PPM
1997 / 04 364.51 PPM 362.81 PPM
1997 / 05 364.51 PPM 362.93 PPM
1997 / 06 363.6 PPM 362.97 PPM
1997 / 07 361.93 PPM 362.96 PPM
1997 / 08 360.41 PPM 362.9 PPM
1997 / 09 360.41 PPM 363.01 PPM
1997 / 10 361.94 PPM 363.42 PPM
1997 / 11 363.61 PPM 363.89 PPM
1997 / 12 364.68 PPM 364.22 PPM
1998 / 01 365.19 PPM 364.26 PPM
1998 / 02 365.46 PPM 364.31 PPM
1998 / 03 365.93 PPM 364.53 PPM
1998 / 04 366.58 PPM 364.9 PPM
1998 / 05 366.86 PPM 365.32 PPM
1998 / 06 366.27 PPM 365.67 PPM
1998 / 07 364.84 PPM 365.88 PPM
1998 / 08 363.79 PPM 366.28 PPM
1998 / 09 364.04 PPM 366.62 PPM
1998 / 10 365.34 PPM 366.78 PPM
1998 / 11 366.6 PPM 366.85 PPM
1998 / 12 367.47 PPM 366.97 PPM
1999 / 01 368.12 PPM 367.19 PPM
1999 / 02 368.52 PPM 367.38 PPM
1999 / 03 368.91 PPM 367.53 PPM
1999 / 04 369.3 PPM 367.65 PPM
1999 / 05 369.21 PPM 367.7 PPM
1999 / 06 368.36 PPM 367.79 PPM
1999 / 07 366.69 PPM 367.73 PPM
1999 / 08 365.32 PPM 367.78 PPM
1999 / 09 365.44 PPM 367.99 PPM
1999 / 10 366.75 PPM 368.18 PPM
1999 / 11 368.05 PPM 368.28 PPM
1999 / 12 368.88 PPM 368.36 PPM
2000 / 01 369.39 PPM 368.47 PPM
2000 / 02 369.65 PPM 368.51 PPM
2000 / 03 369.97 PPM 368.57 PPM
2000 / 04 370.35 PPM 368.67 PPM
2000 / 05 370.24 PPM 368.72 PPM
2000 / 06 369.31 PPM 368.78 PPM
2000 / 07 367.91 PPM 369.05 PPM
2000 / 08 366.76 PPM 369.27 PPM
2000 / 09 366.71 PPM 369.25 PPM
2000 / 10 367.91 PPM 369.3 PPM
2000 / 11 369.28 PPM 369.44 PPM
2000 / 12 370.1 PPM 369.54 PPM
2001 / 01 370.69 PPM 369.79 PPM
2001 / 02 371.18 PPM 370.03 PPM
2001 / 03 371.59 PPM 370.17 PPM
2001 / 04 371.9 PPM 370.22 PPM
2001 / 05 371.8 PPM 370.28 PPM
2001 / 06 370.85 PPM 370.32 PPM
2001 / 07 369.46 PPM 370.57 PPM
2001 / 08 368.32 PPM 370.8 PPM
2001 / 09 368.36 PPM 370.88 PPM
2001 / 10 369.72 PPM 371.11 PPM
2001 / 11 371.05 PPM 371.25 PPM
2001 / 12 371.97 PPM 371.46 PPM
2002 / 01 372.51 PPM 371.56 PPM
2002 / 02 372.91 PPM 371.64 PPM
2002 / 03 373.38 PPM 371.85 PPM
2002 / 04 373.72 PPM 371.96 PPM
2002 / 05 373.71 PPM 372.13 PPM
2002 / 06 372.84 PPM 372.29 PPM
2002 / 07 371.41 PPM 372.55 PPM
2002 / 08 370.37 PPM 372.91 PPM
2002 / 09 370.69 PPM 373.31 PPM
2002 / 10 371.96 PPM 373.45 PPM
2002 / 11 373.29 PPM 373.58 PPM
2002 / 12 374.26 PPM 373.8 PPM
2003 / 01 374.94 PPM 373.95 PPM
2003 / 02 375.48 PPM 374.15 PPM
2003 / 03 375.92 PPM 374.36 PPM
2003 / 04 376.4 PPM 374.61 PPM
2003 / 05 376.55 PPM 374.95 PPM
2003 / 06 375.72 PPM 375.17 PPM
2003 / 07 374.17 PPM 375.31 PPM
2003 / 08 372.94 PPM 375.52 PPM
2003 / 09 373.11 PPM 375.78 PPM
2003 / 10 374.39 PPM 375.92 PPM
2003 / 11 375.67 PPM 376.01 PPM
2003 / 12 376.53 PPM 376.09 PPM
2004 / 01 377.21 PPM 376.23 PPM
2004 / 02 377.73 PPM 376.41 PPM
2004 / 03 378.16 PPM 376.56 PPM
2004 / 04 378.47 PPM 376.68 PPM
2004 / 05 378.4 PPM 376.81 PPM
2004 / 06 377.51 PPM 376.95 PPM
2004 / 07 375.96 PPM 377.15 PPM
2004 / 08 374.49 PPM 377.13 PPM
2004 / 09 374.39 PPM 377.05 PPM
2004 / 10 375.73 PPM 377.23 PPM
2004 / 11 377.2 PPM 377.49 PPM
2004 / 12 378.17 PPM 377.69 PPM
2005 / 01 378.73 PPM 377.75 PPM
2005 / 02 379.27 PPM 377.95 PPM
2005 / 03 379.87 PPM 378.26 PPM
2005 / 04 380.32 PPM 378.51 PPM
2005 / 05 380.42 PPM 378.81 PPM
2005 / 06 379.6 PPM 379.01 PPM
2005 / 07 377.94 PPM 379.11 PPM
2005 / 08 376.73 PPM 379.36 PPM
2005 / 09 376.76 PPM 379.46 PPM
2005 / 10 378.07 PPM 379.63 PPM
2005 / 11 379.53 PPM 379.85 PPM
2005 / 12 380.53 PPM 380.05 PPM
2006 / 01 381.33 PPM 380.32 PPM
2006 / 02 381.96 PPM 380.58 PPM
2006 / 03 382.34 PPM 380.7 PPM
2006 / 04 382.67 PPM 380.84 PPM
2006 / 05 382.63 PPM 380.97 PPM
2006 / 06 381.76 PPM 381.14 PPM
2006 / 07 380.07 PPM 381.27 PPM
2006 / 08 378.49 PPM 381.21 PPM
2006 / 09 378.63 PPM 381.4 PPM
2006 / 10 380.08 PPM 381.66 PPM
2006 / 11 381.44 PPM 381.76 PPM
2006 / 12 382.39 PPM 381.92 PPM
2007 / 01 383.03 PPM 382.01 PPM
2007 / 02 383.55 PPM 382.14 PPM
2007 / 03 384.02 PPM 382.36 PPM
2007 / 04 384.28 PPM 382.45 PPM
2007 / 05 384.13 PPM 382.5 PPM
2007 / 06 383.26 PPM 382.69 PPM
2007 / 07 381.55 PPM 382.82 PPM
2007 / 08 380.29 PPM 383.06 PPM
2007 / 09 380.68 PPM 383.46 PPM
2007 / 10 382.1 PPM 383.65 PPM
2007 / 11 383.45 PPM 383.73 PPM
2007 / 12 384.46 PPM 383.96 PPM
2008 / 01 385.23 PPM 384.2 PPM
2008 / 02 385.75 PPM 384.35 PPM
2008 / 03 386.15 PPM 384.51 PPM
2008 / 04 386.53 PPM 384.73 PPM
2008 / 05 386.49 PPM 384.86 PPM
2008 / 06 385.58 PPM 385.02 PPM
2008 / 07 384.1 PPM 385.42 PPM
2008 / 08 382.77 PPM 385.58 PPM
2008 / 09 382.54 PPM 385.29 PPM
2008 / 10 383.67 PPM 385.15 PPM
2008 / 11 385.18 PPM 385.4 PPM
2008 / 12 386.27 PPM 385.74 PPM
2009 / 01 387.03 PPM 385.97 PPM
2009 / 02 387.48 PPM 386.06 PPM
2009 / 03 387.71 PPM 386.05 PPM
2009 / 04 387.99 PPM 386.18 PPM
2009 / 05 387.95 PPM 386.35 PPM
2009 / 06 386.96 PPM 386.46 PPM
2009 / 07 385.01 PPM 386.42 PPM
2009 / 08 383.62 PPM 386.5 PPM
2009 / 09 383.93 PPM 386.66 PPM
2009 / 10 385.5 PPM 386.92 PPM
2009 / 11 386.94 PPM 387.12 PPM
2009 / 12 387.84 PPM 387.27 PPM
2010 / 01 388.62 PPM 387.6 PPM
2010 / 02 389.33 PPM 387.94 PPM
2010 / 03 389.68 PPM 388.03 PPM
2010 / 04 389.98 PPM 388.17 PPM
2010 / 05 389.95 PPM 388.35 PPM
2010 / 06 389.01 PPM 388.52 PPM
2010 / 07 387.35 PPM 388.74 PPM
2010 / 08 386.23 PPM 389.05 PPM
2010 / 09 386.7 PPM 389.4 PPM
2010 / 10 388.25 PPM 389.68 PPM
2010 / 11 389.62 PPM 389.8 PPM
2010 / 12 390.36 PPM 389.82 PPM
2011 / 01 390.93 PPM 389.89 PPM
2011 / 02 391.36 PPM 389.93 PPM
2011 / 03 391.67 PPM 390.03 PPM
2011 / 04 392.05 PPM 390.24 PPM
2011 / 05 392.07 PPM 390.45 PPM
2011 / 06 391.13 PPM 390.63 PPM
2011 / 07 389.19 PPM 390.56 PPM
2011 / 08 387.86 PPM 390.65 PPM
2011 / 09 388.26 PPM 390.98 PPM
2011 / 10 389.83 PPM 391.3 PPM
2011 / 11 391.21 PPM 391.43 PPM
2011 / 12 392.04 PPM 391.52 PPM
2012 / 01 392.61 PPM 391.55 PPM
2012 / 02 393.21 PPM 391.78 PPM
2012 / 03 393.73 PPM 392.08 PPM
2012 / 04 393.99 PPM 392.2 PPM
2012 / 05 393.88 PPM 392.27 PPM
2012 / 06 392.84 PPM 392.36 PPM
2012 / 07 391.0 PPM 392.43 PPM
2012 / 08 389.89 PPM 392.73 PPM
2012 / 09 390.55 PPM 393.27 PPM
2012 / 10 392.16 PPM 393.58 PPM
2012 / 11 393.56 PPM 393.73 PPM
2012 / 12 394.39 PPM 393.82 PPM
2013 / 01 395.07 PPM 394.08 PPM
2013 / 02 395.7 PPM 394.34 PPM
2013 / 03 396.29 PPM 394.67 PPM
2013 / 04 396.74 PPM 394.94 PPM
2013 / 05 396.75 PPM 395.14 PPM
2013 / 06 395.96 PPM 395.45 PPM
2013 / 07 394.47 PPM 395.83 PPM
2013 / 08 393.24 PPM 396.01 PPM
2013 / 09 393.21 PPM 395.89 PPM
2013 / 10 394.51 PPM 395.93 PPM
2013 / 11 395.97 PPM 396.16 PPM
2013 / 12 396.88 PPM 396.35 PPM
2014 / 01 397.51 PPM 396.45 PPM
2014 / 02 397.97 PPM 396.53 PPM
2014 / 03 398.27 PPM 396.6 PPM
2014 / 04 398.63 PPM 396.78 PPM
2014 / 05 398.69 PPM 397.03 PPM
2014 / 06 397.72 PPM 397.16 PPM
2014 / 07 396.13 PPM 397.45 PPM
2014 / 08 395.02 PPM 397.84 PPM
2014 / 09 395.12 PPM 397.89 PPM
2014 / 10 396.38 PPM 397.91 PPM
2014 / 11 397.86 PPM 398.16 PPM
2014 / 12 398.84 PPM 398.35 PPM
2015 / 01 399.56 PPM 398.52 PPM
2015 / 02 400.12 PPM 398.68 PPM
2015 / 03 400.57 PPM 398.86 PPM
2015 / 04 400.96 PPM 399.09 PPM
2015 / 05 400.91 PPM 399.27 PPM
2015 / 06 400.06 PPM 399.5 PPM
2015 / 07 398.37 PPM 399.65 PPM
2015 / 08 397.06 PPM 399.84 PPM
2015 / 09 397.34 PPM 400.14 PPM
2015 / 10 398.8 PPM 400.37 PPM
2015 / 11 400.37 PPM 400.68 PPM
2015 / 12 401.66 PPM 401.17 PPM
2016 / 01 402.61 PPM 401.59 PPM
2016 / 02 403.25 PPM 401.85 PPM
2016 / 03 403.84 PPM 402.17 PPM
2016 / 04 404.36 PPM 402.5 PPM
2016 / 05 404.4 PPM 402.76 PPM
2016 / 06 403.62 PPM 403.03 PPM
2016 / 07 402.1 PPM 403.31 PPM
2016 / 08 400.78 PPM 403.52 PPM
2016 / 09 400.95 PPM 403.75 PPM
2016 / 10 402.4 PPM 403.99 PPM
2016 / 11 403.76 PPM 404.08 PPM
2016 / 12 404.67 PPM 404.19 PPM
2017 / 01 405.33 PPM 404.25 PPM
2017 / 02 405.91 PPM 404.47 PPM
2017 / 03 406.32 PPM 404.63 PPM
2017 / 04 406.61 PPM 404.73 PPM
2017 / 05 406.65 PPM 405.0 PPM
2017 / 06 405.86 PPM 405.28 PPM
2017 / 07 404.11 PPM 405.38 PPM
2017 / 08 402.57 PPM 405.39 PPM
2017 / 09 402.66 PPM 405.5 PPM
2017 / 10 404.16 PPM 405.74 PPM
2017 / 11 405.7 PPM 406.0 PPM
2017 / 12 406.75 PPM 406.23 PPM
2018 / 01 407.53 PPM 406.48 PPM
2018 / 02 408.23 PPM 406.85 PPM
2018 / 03 408.77 PPM 407.12 PPM
2018 / 04 409.07 PPM 407.24 PPM
2018 / 05 408.93 PPM 407.3 PPM
2018 / 06 408.06 PPM 407.47 PPM
2018 / 07 406.49 PPM 407.76 PPM
2018 / 08 405.11 PPM 407.95 PPM
2018 / 09 405.18 PPM 408.03 PPM
2018 / 10 406.65 PPM 408.2 PPM
2018 / 11 408.12 PPM 408.34 PPM
2018 / 12 409.19 PPM 408.6 PPM
2019 / 01 409.92 PPM 408.9 PPM
2019 / 02 410.35 PPM 408.98 PPM
2019 / 03 410.89 PPM 409.25 PPM
2019 / 04 411.33 PPM 409.51 PPM
2019 / 05 411.34 PPM 409.71 PPM
2019 / 06 410.53 PPM 409.93 PPM
2019 / 07 408.88 PPM 410.15 PPM
2019 / 08 407.64 PPM 410.47 PPM
2019 / 09 407.92 PPM 410.76 PPM
2019 / 10 409.44 PPM 410.97 PPM
2019 / 11 410.87 PPM 411.06 PPM
2019 / 12 411.76 PPM 411.17 PPM
2020 / 01 412.43 PPM 411.34 PPM
2020 / 02 412.95 PPM 411.53 PPM
2020 / 03 413.44 PPM 411.78 PPM
2020 / 04 413.86 PPM 412.03 PPM
2020 / 05 413.81 PPM 412.18 PPM
2020 / 06 412.88 PPM 412.31 PPM
2020 / 07 411.17 PPM 412.46 PPM
2020 / 08 409.73 PPM 412.59 PPM
2020 / 09 410.0 PPM 412.86 PPM
2020 / 10 411.66 PPM 413.22 PPM
2020 / 11 413.25 PPM 413.47 PPM
2020 / 12 414.14 PPM 413.54 PPM
2021 / 01 414.74 PPM 413.66 PPM
2021 / 02 415.21 PPM 413.8 PPM
2021 / 03 415.51 PPM 413.84 PPM
2021 / 04 415.82 PPM 413.98 PPM
2021 / 05 416.01 PPM 414.39 PPM
2021 / 06 415.2 PPM 414.63 PPM
2021 / 07 413.45 PPM 414.74 PPM
2021 / 08 412.16 PPM 415.01 PPM
2021 / 09 412.38 PPM 415.25 PPM
2021 / 10 413.84 PPM 415.4 PPM
2021 / 11 415.59 PPM 415.82 PPM
2021 / 12 416.61 PPM 416.02 PPM
2022 / 01 417.22 PPM 416.13 PPM
2022 / 02 417.67 PPM 416.25 PPM
2022 / 03 418.05 PPM 416.39 PPM
2022 / 04 418.42 PPM 416.58 PPM
2022 / 05 418.41 PPM 416.79 PPM
2022 / 06 417.5 PPM 416.93 PPM
2022 / 07 415.82 PPM 417.11 PPM
2022 / 08 414.45 PPM 417.31 PPM
2022 / 09 414.59 PPM 417.45 PPM
2022 / 10 416.11 PPM 417.67 PPM
2022 / 11 417.72 PPM 417.94 PPM
2022 / 12 418.72 PPM 418.13 PPM
2023 / 01 419.25 PPM 418.17 PPM
2023 / 02 419.67 PPM 418.26 PPM
2023 / 03 419.97 PPM 418.3 PPM
2023 / 04 420.33 PPM 418.49 PPM
2023 / 05 420.5 PPM 418.87 PPM
2023 / 06 419.51 PPM 418.96 PPM
2023 / 07 417.87 PPM 419.2 PPM
2023 / 08 416.59 PPM 419.46 PPM
2023 / 09 416.83 PPM 419.7 PPM
2023 / 10 418.64 PPM 420.2 PPM
2023 / 11 420.15 PPM 420.38 PPM

Common Questions

What is Atmospheric Carbon Dioxide (co2)?

Atmospheric Carbon Dioxide is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms, found in the gas state at room temperature. In the air, Atmospheric Carbon Dioxide is transparent to visible light but absorbs infrared radiation, acting as a greenhouse gas.

Source: wikipedia.org

What is Atmospheric Carbon Dioxide (co2) used for?

Atmospheric Carbon Dioxide is used as a refrigerant, in fire extinguishers, for inflating life rafts and life jackets, blasting coal, foaming rubber and plastics, promoting the growth of plants in greenhouses, immobilizing animals before slaughter, and in carbonated beverages. And most improtantly it is food for all plants on earth.

What does PPM mean?

PPM is an abbreviation for "parts per million" and it also can be expressed as milligrams per liter (mg/L). This measurement is the mass of a chemical or contaminate per unit volume of water. Seeing ppm or mg/L on a lab report means the same thing.

One ppm is equivalent to the absolute fractional amount multiplied by one million. A better way to think of ppm is to visualize putting four drops of ink in a 55-gallon barrel of water and mixing it thoroughly. This procedure would produce an ink concentration of 1 ppm. Some other analogies that may help you visualize the scale involved with ppm. One ppm is like:

  • one inch in 16 miles,
  • one second in 11.5 days,
  • one minute in two years.

An even smaller concentration measurement is parts per billion (ppb). One ppb is one part in 1 billion. Because a ppb is a much lower concentration, some analogies would be :

  • one sheet in a roll of toilet paper stretching from New York to London,
  • one second in nearly 32 years, or
  • one pinch of salt in 10 tons of potato chips.

Data Information

The uncertainty in the global monthly mean is estimated using a monte carlo technique that computes 100 globally-averaged time series, each time using a slightly different set of measurement records from the NOAA ESRL cooperative air sampling network. The reported uncertainty, 0.13 ppm, is the mean of the standard deviations for each monthly mean using this technique. Please see Conway et al., 1994, JGR, vol. 99, no. D11. for a complete discussion. Units are ppm. CO2 expressed as a mole fraction in dry air, micromol/mol, abbreviated as PPM.

NOTE: In general, the data presented for the last year are subject to change. depending on recalibration of the reference gas mixtures used, and other quality control procedures. Occasionally, earlier years may also be changed for the same reasons. Usually these changes are minor.

Data Source

NOAA / Global Monitoring Laboratory (Earth System Research Laboratories)

https://gml.noaa.gov/ccgg/trends/gl_data.html

Data Gathering Locations

We make use of the global mean of atomospheric CO2 which is gathered by four observatories across the world.

Mauna Loa Observatory, Hawaii. (19.5364Β° N, 155.5765Β° W)

Mauna Loa Observatory, Hawaii