Year All greenhouse gases including aerosols 67% of probability staying below 1.5ºC 67% probability of staying below 2ºC
1860 285.71 465 505
1865 285.39 465 505
1870 285.06 465 505
1875 285.66 465 505
1880 286.25 465 505
1885 287.05 465 505
1890 287.84 465 505
1895 287.74 465 505
1900 287.65 465 505
1905 285.81 465 505
1910 283.98 465 505
1915 286.67 465 505
1920 289.38 465 505
1925 291.48 465 505
1930 293.6 465 505
1935 293.71 465 505
1940 293.83 465 505
1945 295.36 465 505
1950 296.89 465 505
1955 294.51 465 505
1960 294.21 465 505
1965 293.28 465 505
1970 295.15 465 505
1975 304.02 465 505
1978 310.5 465 505
1979 313.01 465 505
1980 315.63 465 505
1981 318.36 465 505
1982 320.96 465 505
1983 324.07 465 505
1984 327.07 465 505
1985 330.14 465 505
1986 333.28 465 505
1987 336.61 465 505
1988 341.02 465 505
1989 344.31 465 505
1990 346.87 465 505
1991 351.27 465 505
1992 354.38 465 505
1993 357.41 465 505
1994 361.32 465 505
1995 365.56 465 505
1996 369.73 465 505
1997 373.21 465 505
1998 378.4 465 505
1999 383.15 465 505
2000 386.76 465 505
2001 388.68 465 505
2002 391.04 465 505
2003 394.13 465 505
2004 396.3 465 505
2005 398.65 465 505
2006 401.22 465 505
2007 403.58 465 505
2008 406.5 465 505
2009 408.36 465 505
2010 411.29 465 505
2011 416.62 465 505
2012 422.22 465 505
2013 428.57 465 505
2014 434.3 465 505
2015 440.46 465 505
2016 446.25 465 505
2017 450.76 465 505
2018 455.67 465 505
2019 460.6 465 505
2020 468.32 465 505
2021 472.35 465 505