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PM2.5 air pollution — all countries

PM2.5 air pollution — Sierra Leone

PM2.5 air pollution in Sierra Leone in 2023 — 22.5 µg/m³. Ranked 132 in the world out of 200. Since 1990, the indicator has fallen by 6%.

2023 22.5 µg/m³ +0.43% vs 2022
World rank 132of 200
Period maximum 26.7 µg/m³2004
Period minimum 19.8 µg/m³2003

Trend over time

1990–2023 · µg/m³

PM2.5 air pollution — Sierra Leone, 1990–20231820222426281990199419982002200620102014201820221990: 23.9 µg/m³1991: 23 µg/m³1992: 23 µg/m³1993: 23 µg/m³1994: 22.9 µg/m³1995: 21.3 µg/m³1996: 22.8 µg/m³1997: 22.8 µg/m³1998: 22.8 µg/m³1999: 22.7 µg/m³2000: 23.5 µg/m³2001: 20.8 µg/m³2002: 21.9 µg/m³2003: 19.8 µg/m³2004: 26.7 µg/m³2005: 24 µg/m³2006: 22.6 µg/m³2007: 23 µg/m³2008: 24.6 µg/m³2009: 24.1 µg/m³2010: 21.8 µg/m³2011: 24.9 µg/m³2012: 21.9 µg/m³2013: 20.7 µg/m³2014: 20.4 µg/m³2015: 26.7 µg/m³2016: 24.7 µg/m³2017: 23.2 µg/m³2018: 24.1 µg/m³2019: 22.5 µg/m³2020: 22.7 µg/m³2021: 21.4 µg/m³2022: 22.4 µg/m³2023: 22.5 µg/m³
Change over the period: −1.4 (−5.97%) Average annual rate: -0.19 %

Comparison, 2023

How the value compares with the world and the groups this territory belongs to: Sierra Leone

Sierra Leone 22.5 µg/m³
World 32.9 µg/m³
Sub-Saharan Africa 35.4 µg/m³
Western Africa computed 50.9 µg/m³
Low-income countries computed 31.1 µg/m³
PM2.5 air pollution — Sierra Leone, by year Sierra Leone All countries CSV XLSX
Year µg/m³ Change Change, %
2023 22.5 +0.1 +0.43%
2022 22.4 +1 +4.67%
2021 21.4 −1.3 −5.75%
2020 22.7 +0.2 +0.75%
2019 22.5 −1.6 −6.59%
2018 24.1 +0.9 +3.67%
2017 23.2 −1.4 −5.74%
2016 24.7 −2 −7.5%
2015 26.7 +6.3 +30.96%
2014 20.4 −0.3 −1.51%
2013 20.7 −1.2 −5.48%
2012 21.9 −3 −12.03%
2011 24.9 +3.1 +14.09%
2010 21.8 −2.3 −9.6%
2009 24.1 −0.5 −1.88%
2008 24.6 +1.6 +6.84%
2007 23 +0.4 +1.57%
2006 22.6 −1.4 −5.79%
2005 24 −2.7 −10.05%
2004 26.7 +6.9 +35.13%
2003 19.8 −2.1 −9.72%
2002 21.9 +1.1 +5.06%
2001 20.8 −2.7 −11.34%
2000 23.5 +0.8 +3.41%
1999 22.7 −0 −0.17%
1998 22.8 −0 −0.17%
1997 22.8 −0 −0.17%
1996 22.8 +1.6 +7.48%
1995 21.3 −1.7 −7.27%
1994 22.9 −0 −0.17%
1993 23 −0 −0.17%
1992 23 −0 −0.17%
1991 23 −0.9 −3.57%
1990 23.9 — —

Western Africa, 2023

The same indicator for neighboring countries — with links to their pages

LR Liberia 17.9 CV Cabo Verde 20.2 CI Côte d'Ivoire 20.4 SL Sierra Leone 22.5 GN Guinea 27.3 GH Ghana 28.1 GW Guinea-Bissau 32.3 TG Togo 34.3 ML Mali 35.5 BF Burkina Faso 37.3 GM Gambia 38.3 BJ Benin 39.7 SN Senegal 41.6 MR Mauritania 46.5 NE Niger 65.2 NG Nigeria 65.7
Full table for all countries

About the indicator

The mean annual concentration of suspended particles smaller than 2.5 micrometers, weighted by population — that is, the concentration residents are actually exposed to rather than the average across the territory. The WHO guideline of 2021 is no more than 5 µg/m³; in the most polluted countries values exceed it more than tenfold.

Source: Global Health Observatory (WHO), license CC BY-NC-SA 3.0 IGO.

Other indicators for Sierra Leone

Mortality Air pollution death rate

How many deaths per 100,000 people are attributed to dirty air — outdoors and in the home.

Sierra Leone by year Emissions CO2 emissions

Annual carbon dioxide emissions from burning fuel and producing cement.

Sierra Leone by year Demography Urban population share

What part of a country's residents lives in cities — the level of urbanization.

Sierra Leone by year Environment Forest cover

What share of a country's territory is covered by forest.

Sierra Leone by year Environment Forest area

The absolute area of forest in square kilometers.

Sierra Leone by year Environment Protected areas

The share of land and sea under protection — nature reserves, national parks, sanctuaries.

Sierra Leone by year
All indicators for Sierra Leone