Namibia vs Sierra Leone: Exposure to air pollution from human sources

Namibia

14.53 micrograms per cubic meter

in 2024

Sierra Leone

14.74 micrograms per cubic meter

in 2024

Namibia rank

97th

Sierra Leone rank

95th

Exposure to air pollution from human sources over time

Namibia
Sierra Leone

How they compare

Sierra Leone currently reports 14.74 micrograms per cubic meter against 14.53 micrograms per cubic meter in Namibia, a difference of 0.21 micrograms per cubic meter.

The two have swapped places 6 times across 27 shared years of data; in 1998 it was Sierra Leone ahead.

Namibia ranks 97th and Sierra Leone ranks 95th of 240 countries.

Individual pages

About this data

Indicator: Exposure to air pollution from human sources
Unit: micrograms per cubic meter
Source: Energy Policy Institute at the University of Chicago (EPIC) (2026) – with minor processing by Our World in Data
Licence: CC BY 4.0 (Our World in Data)
Coverage: 240 places, 6,480 data points, 1998–2024
Last refreshed: 07 August 2026

Annual population-weighted average concentration of fine particulate matter (PM2.5) in the air, measured in micrograms per cubic meter (µg/m³). Fine particulate matter (PM2.5) are particles with a diameter of 2.5 micrometers or less, which can pose significant health risks. This data excludes natural sources of PM2.5, such as dust and sea salt, to focus on human-caused pollution.