What is emissions of air pollutants in Sierra Leone?

Emissions of air pollutants in Sierra Leone was 24,282 tonnes in 2022, according to Hoesly et al. (2024) - Community Emissions Data System (CEDS) – with major processing by Our World in Data.

What is the highest emissions of air pollutants recorded in Sierra Leone?

The highest recorded value was 24,282 tonnes in 2022.

What is the lowest emissions of air pollutants recorded in Sierra Leone?

The lowest recorded value was 50.03 tonnes in 1750.

How does Sierra Leone rank for emissions of air pollutants?

Sierra Leone ranks 155th out of 220 countries with data for 2022.

Is emissions of air pollutants 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 Hoesly et al. (2024) - Community Emissions Data System (CEDS) – with major processing by Our World in Data, published as part of Emissions of air pollutants. Statizoid updates them automatically from the source API.

Emissions of air pollutants in Sierra Leone

Name: Emissions of air pollutants in Sierra Leone
Creator: Hoesly et al. (2024) - Community Emissions Data System (CEDS) – with major processing by Our World in Data
License: CC BY 4.0 (Our World in Data)

Sierra Leone: Emissions of air pollutants was 24,282 tonnes in 2022. ◆ Volatile

Latest (2022)

24,282 tonnes

Change on year

up 8.3%

World rank

155th

of 220 countries

All-time high

24,282 tonnes

in 2022

All-time low

50.03 tonnes

in 1750

Years of data

273

1750–2022

Emissions of air pollutants in Sierra Leone, 1750–2022

Source: Hoesly et al. (2024) - Community Emissions Data System (CEDS) – with major processing by Our World in Data. Measured in tonnes.

Analysis

The most recent figure for emissions of air pollutants in Sierra Leone is 24,282 tonnes, 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, emissions of air pollutants in Sierra Leone peaked at 24,282 tonnes in 2022 and was at its lowest, 50.03 tonnes, 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.

Averages by decade

Decade	Average	Lowest	Highest	Years
1750s	50.1 tonnes	50.03 tonnes	50.17 tonnes	10
1760s	50.25 tonnes	50.18 tonnes	50.31 tonnes	10
1770s	50.39 tonnes	50.32 tonnes	50.45 tonnes	10
1780s	50.53 tonnes	50.47 tonnes	50.59 tonnes	10
1790s	50.67 tonnes	50.61 tonnes	50.73 tonnes	10
1800s	51.29 tonnes	50.75 tonnes	51.83 tonnes	10
1810s	52.62 tonnes	51.95 tonnes	53.28 tonnes	10
1820s	54.1 tonnes	53.43 tonnes	54.78 tonnes	10
1830s	55.61 tonnes	54.93 tonnes	56.29 tonnes	10
1840s	57.13 tonnes	56.44 tonnes	57.82 tonnes	10
1850s	58.67 tonnes	57.97 tonnes	59.37 tonnes	10
1860s	61.3 tonnes	59.53 tonnes	63.08 tonnes	10
1870s	65.34 tonnes	63.48 tonnes	67.22 tonnes	10
1880s	69.59 tonnes	67.65 tonnes	71.6 tonnes	10
1890s	77 tonnes	72.09 tonnes	92.96 tonnes	10
1900s	166.49 tonnes	105.04 tonnes	217.26 tonnes	10
1910s	273.69 tonnes	229.44 tonnes	326.42 tonnes	10
1920s	420.97 tonnes	339.13 tonnes	511.41 tonnes	10
1930s	643.35 tonnes	532.13 tonnes	776.8 tonnes	10
1940s	935.25 tonnes	801.02 tonnes	1,115 tonnes	10
1950s	4,104 tonnes	2,147 tonnes	8,569 tonnes	10
1960s	6,899 tonnes	5,044 tonnes	12,970 tonnes	10
1970s	13,778 tonnes	10,195 tonnes	17,784 tonnes	10
1980s	18,411 tonnes	15,626 tonnes	20,809 tonnes	10
1990s	12,143 tonnes	10,401 tonnes	16,151 tonnes	10
2000s	10,898 tonnes	9,011 tonnes	12,472 tonnes	10
2010s	17,899 tonnes	12,478 tonnes	22,182 tonnes	10
2020s	23,033 tonnes	22,388 tonnes	24,282 tonnes	3

Countries ranked near Sierra Leone

153 Armenia 25,032 tonnes compare
156 Liberia 23,684 tonnes compare
157 Equatorial Guinea 23,410 tonnes compare
158 New Caledonia 23,358 tonnes compare

See the full ranking of 220 places →

More environment data for Sierra Leone

Total greenhouse gas emissions excluding LULUCF 7.93 Mt CO2e (2024)
Total greenhouse gas emissions excluding LULUCF per capita 0.9174 t CO2e/capita (2024)
Methane (CH4) emissions from Agriculture 2.62 Mt CO2e (2024)
Methane (CH4) emissions from Building (Energy) 0.7175 Mt CO2e (2024)
Methane (CH4) emissions from Fugitive Emissions (Energy) 1.45 Mt CO2e (2024)
Methane (CH4) emissions from Industrial Combustion (Energy) 0.0007 Mt CO2e (2024)
Methane (CH4) emissions (total) excluding LULUCF 5.57 Mt CO2e (2024)
Methane (CH4) emissions from Power Industry (Energy) 0.0004 Mt CO2e (2024)
Methane (CH4) emissions from Transport (Energy) 0.005 Mt CO2e (2024)
Methane (CH4) emissions from Waste 0.7846 Mt CO2e (2024)

All data for Sierra Leone →

Frequently asked questions

What is emissions of air pollutants in Sierra Leone?: Emissions of air pollutants in Sierra Leone was 24,282 tonnes in 2022, according to Hoesly et al. (2024) - Community Emissions Data System (CEDS) – with major processing by Our World in Data.
What is the highest emissions of air pollutants recorded in Sierra Leone?: The highest recorded value was 24,282 tonnes in 2022.
What is the lowest emissions of air pollutants recorded in Sierra Leone?: The lowest recorded value was 50.03 tonnes in 1750.
How does Sierra Leone rank for emissions of air pollutants?: Sierra Leone ranks 155th out of 220 countries with data for 2022.
Is emissions of air pollutants 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 Hoesly et al. (2024) - Community Emissions Data System (CEDS) – with major processing by Our World in Data, published as part of Emissions of air pollutants. 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).

About this data

Indicator: Emissions of air pollutants
Unit: tonnes
Source: Hoesly et al. (2024) - Community Emissions Data System (CEDS) – with major processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 220 places, 60,060 data points, 1750–2022
Last refreshed: 07 August 2026

Nitrogen oxides (NOₓ) are gases that are mainly formed during the burning of fossil fuels. Exposure to NOₓ gases can have negative impacts on respiratory health. NOₓ gases can also lead to the formation of ozone – another air pollutant.