File:Mauna Loa - CO2 - Apr2019.jpg

Co2 Monitoring

• https://www.esrl.noaa.gov/gmd/ccgg/trends/

Mauna Loa, Hawaii / Global / CO2 Movie / CO2 Emissions

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Highest Daily CO2 Records (by year) | Mauna Loa Observatory

Measurements are made by two independent CO2 monitoring programs (NOAA and Scripps) at the Mauna Loa Observatory in Hawaii about 3400 metres above sea level.

April 04: 412.79 ppm

April 03: 412.96 ppm

April 02: Unavailable

April 01: 411.69 ppm

March 31: 412.37 ppm

March 31: 412.37 ppm

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NOAA Monthly CO2 Data

Atmospheric CO2 | March 1958 to Present | Mauna Loa Observatory

Table produced by https://www.co2.earth/monthly-co2

Year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

2018 407.98 408.35 409.46 410.26 411.24 410.79 408.71 406.99 0.00 0.00 0.00 0.00

2017 406.13 406.42 407.18 409.00 409.65 408.84 407.07 405.07 403.38 403.64 405.14 406.82

2016 402.52 404.04 404.83 407.42 407.70 406.81 404.39 402.25 401.03 401.57 403.53 404.42

2015 399.98 400.28 401.54 403.28 403.96 402.80 401.31 398.93 397.63 398.29 400.16 401.85

2014 397.85 398.01 399.77 401.38 401.78 401.25 399.10 397.03 395.38 396.03 397.28 398.91

2013 395.55 396.80 397.43 398.41 399.78 398.61 397.32 395.20 393.45 393.70 395.16 396.84

2012 393.12 393.86 394.40 396.18 396.74 395.71 394.36 392.39 391.11 391.05 392.98 394.34

2011 391.33 391.86 392.60 393.25 394.19 393.73 392.51 390.13 389.08 389.00 390.28 391.86

2010 388.71 390.20 391.17 392.46 393.00 392.15 390.20 388.35 386.85 387.24 388.67 389.79

2009 386.94 387.48 388.82 389.55 390.14 389.48 388.03 386.11 384.74 384.43 386.02 387.42

2008 385.52 385.82 386.03 387.21 388.54 387.76 386.36 384.09 383.18 382.99 384.19 385.56

2007 382.89 383.90 384.58 386.50 386.56 386.10 384.50 381.99 380.96 381.12 382.45 383.95

2006 381.38 382.19 382.67 384.61 385.03 384.05 382.46 380.41 378.85 379.13 380.15 381.82

2005 378.46 379.73 380.77 382.29 382.45 382.21 380.74 378.74 376.70 377.00 378.35 380.11

2004 377.00 377.87 378.88 380.35 380.62 379.69 377.47 376.01 374.25 374.46 376.16 377.51

2003 374.88 375.64 376.45 377.73 378.60 378.28 376.70 374.38 373.17 373.14 374.66 375.99

2002 372.53 373.20 374.12 375.02 375.76 375.52 374.01 371.85 370.75 370.55 372.25 373.79

2001 370.59 371.51 372.43 373.37 373.85 373.21 371.51 369.61 368.18 368.45 369.76 371.24

2000 369.29 369.54 370.60 371.82 371.58 371.70 369.86 368.13 367.00 367.03 368.37 369.67

1999 368.18 369.07 369.68 370.99 370.96 370.30 369.45 366.90 364.81 365.37 366.72 368.10

1998 365.26 365.98 367.24 368.66 369.42 368.99 367.82 365.95 364.02 364.40 365.52 367.13

1997 363.09 364.03 364.51 366.35 366.64 365.59 364.31 362.25 360.29 360.82 362.49 364.38

1996 362.07 363.24 364.17 364.57 365.13 364.92 363.55 361.38 359.54 359.58 360.89 362.24

1995 359.92 360.86 361.83 363.30 363.69 363.19 361.64 359.12 358.17 357.99 359.45 360.68

1994 358.24 358.92 359.99 361.23 361.65 360.81 359.38 357.46 355.73 356.07 357.53 358.98

1993 357.00 357.31 358.47 359.27 360.19 359.52 357.33 355.64 354.03 354.12 355.41 356.91

1992 356.25 357.11 357.86 359.09 359.59 359.33 357.01 354.94 352.96 353.32 354.32 355.57

1991 354.84 355.73 357.23 358.66 359.13 358.13 356.19 353.85 352.25 352.35 353.81 355.12

1990 353.80 355.04 355.73 356.32 357.32 356.34 354.84 353.01 351.31 351.62 353.07 354.33

1989 352.91 353.27 353.96 355.64 355.86 355.37 353.99 351.81 350.05 350.25 351.49 352.85

1988 350.39 351.64 352.41 353.69 354.21 353.72 352.69 350.40 348.92 349.13 350.20 351.41

1987 348.52 348.73 349.73 351.31 352.09 351.53 350.11 348.08 346.52 346.59 347.96 349.16

1986 346.56 347.28 348.01 349.77 350.38 349.93 348.16 346.08 345.22 344.51 345.93 347.22

1985 345.21 346.16 347.74 348.34 349.06 348.38 346.72 345.02 343.27 343.13 344.49 345.88

1984 344.10 344.79 345.52 346.84 347.63 346.97 345.53 343.55 341.40 341.67 343.10 344.70

1983 341.68 342.90 343.33 345.25 346.03 345.63 344.19 342.27 340.35 340.38 341.59 343.05

1982 340.96 341.73 342.81 343.97 344.63 343.79 342.32 340.09 338.28 338.29 339.60 340.90

1981 339.29 340.55 341.61 342.53 343.03 342.54 340.78 338.44 336.95 337.08 338.58 339.88

1980 337.90 338.34 340.01 340.93 341.48 341.33 339.40 337.70 336.19 336.15 337.27 338.32

1979 336.14 336.69 338.27 338.95 339.21 339.26 337.54 335.75 333.98 334.19 335.31 336.81

1978 334.95 335.25 336.66 337.69 338.03 338.01 336.41 334.41 332.37 332.41 333.75 334.90

1977 332.66 333.13 334.95 336.13 336.93 336.17 334.88 332.56 331.29 331.27 332.41 333.60

1976 331.59 332.75 333.52 334.64 334.77 334.00 333.06 330.68 328.95 328.75 330.15 331.62

1975 330.73 331.46 331.90 333.17 333.94 333.45 331.98 329.95 328.50 328.35 329.37 330.59

1974 329.35 330.71 331.48 332.65 333.20 332.16 331.07 329.12 327.32 327.28 328.30 329.58

1973 328.54 329.56 330.30 331.50 332.48 332.07 330.87 329.31 327.51 327.18 328.16 328.64

1972 326.77 327.63 327.75 329.72 330.07 329.09 328.05 326.32 324.93 325.06 326.50 327.55

1971 326.17 326.68 327.18 327.78 328.92 328.57 327.34 325.46 323.36 323.57 324.80 326.01

1970 325.03 325.99 326.87 328.13 328.07 327.66 326.35 324.69 323.10 323.16 323.98 325.13

1969 324.00 324.42 325.64 326.66 327.34 326.76 325.88 323.67 322.38 321.78 322.85 324.11

1968 322.57 323.15 323.89 325.02 325.57 325.36 324.14 322.03 320.41 320.25 321.31 322.84

1967 322.07 322.50 323.04 324.42 325.00 324.09 322.55 320.92 319.31 319.31 320.72 321.96

1966 320.62 321.59 322.39 323.87 324.01 323.75 322.39 320.37 318.64 318.10 319.79 321.08

1965 319.44 320.44 320.89 322.13 322.16 321.87 321.39 318.81 317.81 317.30 318.87 319.42

1964 319.57 320.07 320.73 321.77 322.25 321.89 320.44 318.70 316.70 316.79 317.79 318.71

1963 318.74 319.08 319.86 321.39 322.25 321.47 319.74 317.77 316.21 315.99 317.12 318.31

1962 317.94 318.56 319.68 320.63 321.01 320.55 319.58 317.40 316.26 315.42 316.69 317.69

1961 316.93 317.70 318.54 319.48 320.58 319.77 318.57 316.79 314.80 315.38 316.10 317.01

1960 316.43 316.97 317.58 319.02 320.03 319.59 318.18 315.91 314.16 313.83 315.00 316.19

1959 315.62 316.38 316.71 317.72 318.29 318.15 316.54 314.80 313.84 313.26 314.80 315.58

1958 315.71 317.45 317.50 317.10 315.86 314.93 313.20 312.66 313.33 314.67

Units = parts per million (ppm)

Scripps data: 1958 - 1974 | NOAA data: 1974 - Present

Source Dataset NOAA-ESRL Global Monitoring [Web + .txt]