Long run air pollution in Sierra Leone
Sierra Leone: Long run air pollution was 24,282 in 2022. ◆ Volatile
Latest (2022)
24,282
Change on year
up 8.3%
World rank
155th
of 220 countries
All-time high
24,282
in 2022
All-time low
50.03
in 1750
Years of data
273
1750–2022
Long run air pollution in Sierra Leone, 1750–2022
Source: Our World in Data.
Analysis
The most recent figure for long run air pollution in Sierra Leone is 24,282, measured in 2022. That is the highest value across all 273 years on record.
That represents a change of up 8.3% on the previous year and up 60.1% over ten years.
Over the whole period, long run air pollution in Sierra Leone peaked at 24,282 in 2022 and was at its lowest, 50.03, in 1750.
Sierra Leone ranks 155th of 220 countries on this measure, in the middle of the range.
The series is highly variable year to year, so single readings are best treated with caution.
Long run air pollution in Sierra Leone, year by year
| Year | Value | Change |
|---|---|---|
| 1750 | 50.03 | — |
| 1751 | 50.05 | +0.0% |
| 1752 | 50.06 | +0.0% |
| 1753 | 50.08 | +0.0% |
| 1754 | 50.09 | +0.0% |
| 1755 | 50.11 | +0.0% |
| 1756 | 50.12 | +0.0% |
| 1757 | 50.14 | +0.0% |
| 1758 | 50.15 | +0.0% |
| 1759 | 50.17 | +0.0% |
| 1760 | 50.18 | +0.0% |
| 1761 | 50.19 | +0.0% |
| 1762 | 50.21 | +0.0% |
| 1763 | 50.22 | +0.0% |
| 1764 | 50.24 | +0.0% |
| 1765 | 50.25 | +0.0% |
| 1766 | 50.27 | +0.0% |
| 1767 | 50.28 | +0.0% |
| 1768 | 50.3 | +0.0% |
| 1769 | 50.31 | +0.0% |
| 1770 | 50.32 | +0.0% |
| 1771 | 50.34 | +0.0% |
| 1772 | 50.35 | +0.0% |
| 1773 | 50.37 | +0.0% |
| 1774 | 50.38 | +0.0% |
| 1775 | 50.4 | +0.0% |
| 1776 | 50.41 | +0.0% |
| 1777 | 50.42 | +0.0% |
| 1778 | 50.44 | +0.0% |
| 1779 | 50.45 | +0.0% |
| 1780 | 50.47 | +0.0% |
| 1781 | 50.48 | +0.0% |
| 1782 | 50.5 | +0.0% |
| 1783 | 50.51 | +0.0% |
| 1784 | 50.52 | +0.0% |
| 1785 | 50.54 | +0.0% |
| 1786 | 50.55 | +0.0% |
| 1787 | 50.57 | +0.0% |
| 1788 | 50.58 | +0.0% |
| 1789 | 50.59 | +0.0% |
| 1790 | 50.61 | +0.0% |
| 1791 | 50.62 | +0.0% |
| 1792 | 50.64 | +0.0% |
| 1793 | 50.65 | +0.0% |
| 1794 | 50.66 | +0.0% |
| 1795 | 50.68 | +0.0% |
| 1796 | 50.69 | +0.0% |
| 1797 | 50.7 | +0.0% |
| 1798 | 50.72 | +0.0% |
| 1799 | 50.73 | +0.0% |
| 1800 | 50.75 | +0.0% |
| 1801 | 50.87 | +0.2% |
| 1802 | 50.99 | +0.2% |
| 1803 | 51.11 | +0.2% |
| 1804 | 51.23 | +0.2% |
| 1805 | 51.35 | +0.2% |
| 1806 | 51.47 | +0.2% |
| 1807 | 51.59 | +0.2% |
| 1808 | 51.71 | +0.2% |
| 1809 | 51.83 | +0.2% |
| 1810 | 51.95 | +0.2% |
| 1811 | 52.1 | +0.3% |
| 1812 | 52.25 | +0.3% |
| 1813 | 52.39 | +0.3% |
| 1814 | 52.54 | +0.3% |
| 1815 | 52.69 | +0.3% |
| 1816 | 52.84 | +0.3% |
| 1817 | 52.99 | +0.3% |
| 1818 | 53.13 | +0.3% |
| 1819 | 53.28 | +0.3% |
| 1820 | 53.43 | +0.3% |
| 1821 | 53.58 | +0.3% |
| 1822 | 53.73 | +0.3% |
| 1823 | 53.88 | +0.3% |
| 1824 | 54.03 | +0.3% |
| 1825 | 54.18 | +0.3% |
| 1826 | 54.33 | +0.3% |
| 1827 | 54.48 | +0.3% |
| 1828 | 54.63 | +0.3% |
| 1829 | 54.78 | +0.3% |
| 1830 | 54.93 | +0.3% |
| 1831 | 55.08 | +0.3% |
| 1832 | 55.23 | +0.3% |
| 1833 | 55.38 | +0.3% |
| 1834 | 55.53 | +0.3% |
| 1835 | 55.68 | +0.3% |
| 1836 | 55.83 | +0.3% |
| 1837 | 55.98 | +0.3% |
| 1838 | 56.14 | +0.3% |
| 1839 | 56.29 | +0.3% |
| 1840 | 56.44 | +0.3% |
| 1841 | 56.59 | +0.3% |
| 1842 | 56.75 | +0.3% |
| 1843 | 56.9 | +0.3% |
| 1844 | 57.05 | +0.3% |
| 1845 | 57.2 | +0.3% |
| 1846 | 57.36 | +0.3% |
| 1847 | 57.51 | +0.3% |
| 1848 | 57.66 | +0.3% |
| 1849 | 57.82 | +0.3% |
| 1850 | 57.97 | +0.3% |
| 1851 | 58.13 | +0.3% |
| 1852 | 58.28 | +0.3% |
| 1853 | 58.44 | +0.3% |
| 1854 | 58.59 | +0.3% |
| 1855 | 58.75 | +0.3% |
| 1856 | 58.9 | +0.3% |
| 1857 | 59.06 | +0.3% |
| 1858 | 59.22 | +0.3% |
| 1859 | 59.37 | +0.3% |
| 1860 | 59.53 | +0.3% |
| 1861 | 59.92 | +0.7% |
| 1862 | 60.31 | +0.6% |
| 1863 | 60.7 | +0.7% |
| 1864 | 61.1 | +0.6% |
| 1865 | 61.49 | +0.6% |
| 1866 | 61.88 | +0.6% |
| 1867 | 62.28 | +0.6% |
| 1868 | 62.68 | +0.6% |
| 1869 | 63.08 | +0.6% |
| 1870 | 63.48 | +0.6% |
| 1871 | 63.88 | +0.6% |
| 1872 | 64.29 | +0.6% |
| 1873 | 64.71 | +0.6% |
| 1874 | 65.12 | +0.6% |
| 1875 | 65.54 | +0.6% |
| 1876 | 65.96 | +0.6% |
| 1877 | 66.38 | +0.6% |
| 1878 | 66.8 | +0.6% |
| 1879 | 67.22 | +0.6% |
| 1880 | 67.65 | +0.6% |
| 1881 | 68.08 | +0.6% |
| 1882 | 68.5 | +0.6% |
| 1883 | 68.93 | +0.6% |
| 1884 | 69.35 | +0.6% |
| 1885 | 69.78 | +0.6% |
| 1886 | 70.21 | +0.6% |
| 1887 | 70.64 | +0.6% |
| 1888 | 71.12 | +0.7% |
| 1889 | 71.6 | +0.7% |
| 1890 | 72.09 | +0.7% |
| 1891 | 72.57 | +0.7% |
| 1892 | 73.15 | +0.8% |
| 1893 | 73.75 | +0.8% |
| 1894 | 74.38 | +0.9% |
| 1895 | 75.07 | +0.9% |
| 1896 | 75.81 | +1.0% |
| 1897 | 76.63 | +1.1% |
| 1898 | 83.56 | +9.0% |
| 1899 | 92.96 | +11.2% |
| 1900 | 105.04 | +13.0% |
| 1901 | 126.23 | +20.2% |
| 1902 | 144.06 | +14.1% |
| 1903 | 153.31 | +6.4% |
| 1904 | 162.92 | +6.3% |
| 1905 | 172.91 | +6.1% |
| 1906 | 183.37 | +6.0% |
| 1907 | 194.24 | +5.9% |
| 1908 | 205.53 | +5.8% |
| 1909 | 217.26 | +5.7% |
| 1910 | 229.44 | +5.6% |
| 1911 | 234.1 | +2.0% |
| 1912 | 243.4 | +4.0% |
| 1913 | 254.63 | +4.6% |
| 1914 | 266.08 | +4.5% |
| 1915 | 277.73 | +4.4% |
| 1916 | 289.58 | +4.3% |
| 1917 | 301.64 | +4.2% |
| 1918 | 313.92 | +4.1% |
| 1919 | 326.42 | +4.0% |
| 1920 | 339.13 | +3.9% |
| 1921 | 354.49 | +4.5% |
| 1922 | 371.4 | +4.8% |
| 1923 | 388.96 | +4.7% |
| 1924 | 406.83 | +4.6% |
| 1925 | 428.23 | +5.3% |
| 1926 | 449.17 | +4.9% |
| 1927 | 469.68 | +4.6% |
| 1928 | 490.39 | +4.4% |
| 1929 | 511.41 | +4.3% |
| 1930 | 532.13 | +4.1% |
| 1931 | 554.4 | +4.2% |
| 1932 | 576.74 | +4.0% |
| 1933 | 599.63 | +4.0% |
| 1934 | 623.08 | +3.9% |
| 1935 | 647.23 | +3.9% |
| 1936 | 673.99 | +4.1% |
| 1937 | 707.57 | +5.0% |
| 1938 | 741.9 | +4.9% |
| 1939 | 776.8 | +4.7% |
| 1940 | 801.02 | +3.1% |
| 1941 | 826.92 | +3.2% |
| 1942 | 852.68 | +3.1% |
| 1943 | 879.65 | +3.2% |
| 1944 | 907.57 | +3.2% |
| 1945 | 936.02 | +3.1% |
| 1946 | 966.71 | +3.3% |
| 1947 | 998.93 | +3.3% |
| 1948 | 1,068 | +6.9% |
| 1949 | 1,115 | +4.4% |
| 1950 | 2,147 | +92.6% |
| 1951 | 2,510 | +16.9% |
| 1952 | 2,961 | +18.0% |
| 1953 | 3,431 | +15.9% |
| 1954 | 3,713 | +8.2% |
| 1955 | 4,409 | +18.8% |
| 1956 | 4,466 | +1.3% |
| 1957 | 8,569 | +91.9% |
| 1958 | 4,003 | -53.3% |
| 1959 | 4,834 | +20.8% |
| 1960 | 11,066 | +128.9% |
| 1961 | 5,321 | -51.9% |
| 1962 | 5,559 | +4.5% |
| 1963 | 6,401 | +15.1% |
| 1964 | 5,671 | -11.4% |
| 1965 | 5,250 | -7.4% |
| 1966 | 5,582 | +6.3% |
| 1967 | 5,044 | -9.6% |
| 1968 | 6,128 | +21.5% |
| 1969 | 12,970 | +111.6% |
| 1970 | 10,195 | -21.4% |
| 1971 | 16,668 | +63.5% |
| 1972 | 15,621 | -6.3% |
| 1973 | 11,054 | -29.2% |
| 1974 | 10,631 | -3.8% |
| 1975 | 11,697 | +10.0% |
| 1976 | 13,468 | +15.1% |
| 1977 | 12,976 | -3.7% |
| 1978 | 17,784 | +37.1% |
| 1979 | 17,683 | -0.6% |
| 1980 | 18,074 | +2.2% |
| 1981 | 20,093 | +11.2% |
| 1982 | 18,010 | -10.4% |
| 1983 | 19,563 | +8.6% |
| 1984 | 19,641 | +0.4% |
| 1985 | 19,757 | +0.6% |
| 1986 | 20,809 | +5.3% |
| 1987 | 16,164 | -22.3% |
| 1988 | 16,379 | +1.3% |
| 1989 | 15,626 | -4.6% |
| 1990 | 14,541 | -6.9% |
| 1991 | 16,151 | +11.1% |
| 1992 | 10,658 | -34.0% |
| 1993 | 10,428 | -2.2% |
| 1994 | 10,401 | -0.3% |
| 1995 | 11,498 | +10.5% |
| 1996 | 11,452 | -0.4% |
| 1997 | 11,806 | +3.1% |
| 1998 | 12,116 | +2.6% |
| 1999 | 12,384 | +2.2% |
| 2000 | 9,011 | -27.2% |
| 2001 | 9,996 | +10.9% |
| 2002 | 10,233 | +2.4% |
| 2003 | 10,427 | +1.9% |
| 2004 | 11,351 | +8.9% |
| 2005 | 10,328 | -9.0% |
| 2006 | 12,472 | +20.8% |
| 2007 | 11,539 | -7.5% |
| 2008 | 11,496 | -0.4% |
| 2009 | 12,128 | +5.5% |
| 2010 | 12,478 | +2.9% |
| 2011 | 14,156 | +13.4% |
| 2012 | 15,166 | +7.1% |
| 2013 | 16,537 | +9.0% |
| 2014 | 17,382 | +5.1% |
| 2015 | 18,922 | +8.9% |
| 2016 | 19,918 | +5.3% |
| 2017 | 20,947 | +5.2% |
| 2018 | 21,307 | +1.7% |
| 2019 | 22,182 | +4.1% |
| 2020 | 22,388 | +0.9% |
| 2021 | 22,428 | +0.2% |
| 2022 | 24,282 | +8.3% |
Sierra Leone compared with similar countries
- Sierra Leone's 24,282 is below the median for low income countries, which is 44,196, 55% of the median. (25 countries reporting)
- Sierra Leone's 24,282 is below the median for Sub-Saharan Africa, which is 44,992, 54% of the median. (48 countries reporting)
Biggest year-on-year movements
Years where Long run air pollution in Sierra Leone changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1960 | +128.9% | 4,834 | 11,066 |
| 1969 | +111.6% | 6,128 | 12,970 |
| 1950 | +92.6% | 1,115 | 2,147 |
| 1957 | +91.9% | 4,466 | 8,569 |
| 1971 | +63.5% | 10,195 | 16,668 |
| 1958 | -53.3% | 8,569 | 4,003 |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1750s | 50.1 | 50.03 | 50.17 | 10 |
| 1760s | 50.25 | 50.18 | 50.31 | 10 |
| 1770s | 50.39 | 50.32 | 50.45 | 10 |
| 1780s | 50.53 | 50.47 | 50.59 | 10 |
| 1790s | 50.67 | 50.61 | 50.73 | 10 |
| 1800s | 51.29 | 50.75 | 51.83 | 10 |
| 1810s | 52.62 | 51.95 | 53.28 | 10 |
| 1820s | 54.1 | 53.43 | 54.78 | 10 |
| 1830s | 55.61 | 54.93 | 56.29 | 10 |
| 1840s | 57.13 | 56.44 | 57.82 | 10 |
| 1850s | 58.67 | 57.97 | 59.37 | 10 |
| 1860s | 61.3 | 59.53 | 63.08 | 10 |
| 1870s | 65.34 | 63.48 | 67.22 | 10 |
| 1880s | 69.59 | 67.65 | 71.6 | 10 |
| 1890s | 77 | 72.09 | 92.96 | 10 |
| 1900s | 166.49 | 105.04 | 217.26 | 10 |
| 1910s | 273.69 | 229.44 | 326.42 | 10 |
| 1920s | 420.97 | 339.13 | 511.41 | 10 |
| 1930s | 643.35 | 532.13 | 776.8 | 10 |
| 1940s | 935.25 | 801.02 | 1,115 | 10 |
| 1950s | 4,104 | 2,147 | 8,569 | 10 |
| 1960s | 6,899 | 5,044 | 12,970 | 10 |
| 1970s | 13,778 | 10,195 | 17,784 | 10 |
| 1980s | 18,411 | 15,626 | 20,809 | 10 |
| 1990s | 12,143 | 10,401 | 16,151 | 10 |
| 2000s | 10,898 | 9,011 | 12,472 | 10 |
| 2010s | 17,899 | 12,478 | 22,182 | 10 |
| 2020s | 23,033 | 22,388 | 24,282 | 3 |
Countries ranked near Sierra Leone
- 152 Guadeloupe 25,272 compare
- 153 Armenia 25,032 compare
- 154 Luxembourg 24,887 compare
- 156 Liberia 23,684 compare
- 157 Equatorial Guinea 23,410 compare
- 158 New Caledonia 23,358 compare
More environment data for Sierra Leone
- Grazing land use over the long-term, annual growth rate 0 % change on previous year (2025)
- Grazing land use over the long-term, per unit of GDP 0.0003 hectares per US$ of GDP (2025)
- Grazing land use over the long-term, per capita 0.2494 hectares per person (2025)
- Historical exposure to drought — Land soil moisture anomaly -5.4 Percentage change (2025)
- Historical exposure to drought — Cropland soil moisture anomaly -5.39 Percentage change (2025)
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.232 °C (2025)
- Temperature change 1.28 °C (2025)
- Grazing land use over the long-term, per square kilometre 30.48 hectares per square kilometre (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 1.72 % change on previous year (2024)
Frequently asked questions
- What is long run air pollution in Sierra Leone?
- Long run air pollution in Sierra Leone was 24,282 in 2022, according to Our World in Data.
- What is the highest long run air pollution recorded in Sierra Leone?
- The highest recorded value was 24,282 in 2022.
- What is the lowest long run air pollution recorded in Sierra Leone?
- The lowest recorded value was 50.03 in 1750.
- How does Sierra Leone rank for long run air pollution?
- Sierra Leone ranks 155th out of 220 countries with data for 2022.
- Is long run air pollution rising or falling in Sierra Leone?
- Over the last ten years it is up 60.1%. The long-run trend across the full record is volatile.
- Where does this Sierra Leone data come from?
- The figures come from Our World in Data, published as part of Long run air pollution. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 273 observations, free to reuse under CC BY 4.0 (Our World in Data).