| Year | All greenhouse gases including aerosols | 67 % of probability staying below 1.5 ºC | 67 % probability of below 1.5 °C | 67 % probability of below 2 °C | 67 % probability of staying below 2 ºC |
|---|---|---|---|---|---|
| 1750 | 279.03 | 465 | 505 | ||
| 1755 | 279.4 | 465 | 505 | ||
| 1760 | 279.72 | 465 | 505 | ||
| 1765 | 280.02 | 465 | 505 | ||
| 1770 | 280.29 | 465 | 505 | ||
| 1775 | 280.52 | 465 | 505 | ||
| 1780 | 280.78 | 465 | 505 | ||
| 1785 | 281.05 | 465 | 505 | ||
| 1790 | 281.35 | 465 | 505 | ||
| 1795 | 281.67 | 465 | 505 | ||
| 1800 | 281.97 | 465 | 505 | ||
| 1805 | 282.25 | 465 | 505 | ||
| 1810 | 282.43 | 465 | 505 | ||
| 1815 | 282.51 | 465 | 505 | ||
| 1820 | 282.72 | 465 | 505 | ||
| 1825 | 283.05 | 465 | 505 | ||
| 1830 | 283.46 | 465 | 505 | ||
| 1835 | 283.97 | 465 | 505 | ||
| 1840 | 284.45 | 465 | 505 | ||
| 1845 | 284.91 | 465 | 505 | ||
| 1850 | 286.21 | 465 | 505 | ||
| 1855 | 285.96 | 465 | 505 | ||
| 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 | 304.25 | 465 | 505 | ||
| 1978 | 310.5 | 465 | 505 | ||
| 1979 | 312.49 | 465 | 505 | ||
| 1980 | 315.63 | 465 | 505 | ||
| 1981 | 318.36 | 465 | 505 | ||
| 1982 | 320.97 | 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 | 344.3 | 465 | 505 | ||
| 1990 | 346.86 | 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 | 383.16 | 465 | 505 | ||
| 2000 | 386.76 | 465 | 505 | ||
| 2001 | 388.7 | 465 | 505 | ||
| 2002 | 391.05 | 465 | 505 | ||
| 2003 | 394.14 | 465 | 505 | ||
| 2004 | 396.3 | 465 | 505 | ||
| 2005 | 398.65 | 465 | 505 | ||
| 2006 | 401.24 | 465 | 505 | ||
| 2007 | 403.58 | 465 | 505 | ||
| 2008 | 406.5 | 465 | 505 | ||
| 2009 | 408.46 | 465 | 505 | ||
| 2010 | 411.3 | 465 | 505 | ||
| 2011 | 416.63 | 465 | 505 | ||
| 2012 | 422.22 | 465 | 505 | ||
| 2013 | 428.58 | 465 | 505 | ||
| 2014 | 434.31 | 465 | 505 | ||
| 2015 | 440.48 | 465 | 505 | ||
| 2016 | 446.24 | 465 | 505 | ||
| 2017 | 450.54 | 465 | 505 | ||
| 2018 | 455.5 | 465 | 505 | ||
| 2019 | 460.37 | 465 | 505 |