Chile vs Sierra Leone: Average annual exposure to PM2.5 air pollution
Chile
23.1 micrograms per cubic meter
in 2023
Sierra Leone
22.46 micrograms per cubic meter
in 2023
Chile rank
67th
Sierra Leone rank
69th
Average annual exposure to PM2.5 air pollution over time
- Chile
- Sierra Leone
How they compare
Chile currently reports 23.1 micrograms per cubic meter against 22.46 micrograms per cubic meter in Sierra Leone, a difference of 0.64 micrograms per cubic meter.
The two have swapped places 6 times across 34 shared years of data; in 1990 it was Chile ahead.
Chile ranks 67th and Sierra Leone ranks 69th of 200 countries.
Across the 4 decades both report, Chile averaged higher in 3 and Sierra Leone in 1.
Head to head by decade
| Decade | Chile | Sierra Leone | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 26.61 micrograms per cubic meter | 22.82 micrograms per cubic meter | 3.79 micrograms per cubic meter | Chile |
| 2000s | 24.86 micrograms per cubic meter | 23.1 micrograms per cubic meter | 1.77 micrograms per cubic meter | Chile |
| 2010s | 21.84 micrograms per cubic meter | 23.06 micrograms per cubic meter | 1.23 micrograms per cubic meter | Sierra Leone |
| 2020s | 23.59 micrograms per cubic meter | 22.22 micrograms per cubic meter | 1.37 micrograms per cubic meter | Chile |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher average annual exposure to pm2.5 air pollution, Chile or Sierra Leone?
- Chile, at 23.1 micrograms per cubic meter against 22.46 micrograms per cubic meter in Sierra Leone as of 2023.
- What is the difference in average annual exposure to pm2.5 air pollution between Chile and Sierra Leone?
- 0.64 micrograms per cubic meter, with Chile ahead.
- How many years of comparable data are there for Chile and Sierra Leone?
- 34 years are reported by both, from 1990 to 2023.
- How do Chile and Sierra Leone rank globally for average annual exposure to pm2.5 air pollution?
- Chile ranks 67th and Sierra Leone ranks 69th of 200 countries.
- Where does this data come from?
- Global Burden of Disease Study 2023, Institute for Health Metrics and Evaluation (IHME), via World Bank (2026) – processed by Our World in Data, published as Average annual exposure to PM2.5 air pollution. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
The average level of exposure of the population to suspended particles less than 2.5 microns in diameter, which are capable of penetrating deep into the respiratory tract and damaging health. This is measured in micrograms per cubic meter.