Iceland vs Samoa: Exposure to outdoor air pollution
Iceland
4.6 µg/m³
in 2024
Samoa
4.1 µg/m³
in 2024
Iceland rank
216th
Samoa rank
219th
Exposure to outdoor air pollution over time
- Iceland
- Samoa
How they compare
Iceland currently reports 4.6 µg/m³ against 4.1 µg/m³ in Samoa, a difference of 0.5 µg/m³.
That makes Iceland's figure about 1.1 times Samoa's.
The two have swapped places 10 times across 27 shared years of data; in 1998 it was Iceland ahead.
Iceland ranks 216th and Samoa ranks 219th of 241 countries.
Iceland has averaged higher in every one of the 4 decades both report.
Head to head by decade
| Decade | Iceland | Samoa | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 3.9 µg/m³ | 3.25 µg/m³ | 0.65 µg/m³ | Iceland |
| 2000s | 4.25 µg/m³ | 3.83 µg/m³ | 0.42 µg/m³ | Iceland |
| 2010s | 4.27 µg/m³ | 4.06 µg/m³ | 0.21 µg/m³ | Iceland |
| 2020s | 4.52 µg/m³ | 3.92 µg/m³ | 0.6 µg/m³ | Iceland |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher exposure to outdoor air pollution, Iceland or Samoa?
- Iceland, at 4.6 µg/m³ against 4.1 µg/m³ in Samoa as of 2024.
- What is the difference in exposure to outdoor air pollution between Iceland and Samoa?
- 0.5 µg/m³, with Iceland ahead.
- How many years of comparable data are there for Iceland and Samoa?
- 27 years are reported by both, from 1998 to 2024.
- How do Iceland and Samoa rank globally for exposure to outdoor air pollution?
- Iceland ranks 216th and Samoa ranks 219th of 241 countries.
- Where does this data come from?
- SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data, published as Exposure to outdoor air pollution. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
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.