Saint Helena vs Samoa: Exposure to outdoor air pollution
Saint Helena
4.1 µg/m³
in 2024
Samoa
4.1 µg/m³
in 2024
Saint Helena rank
219th
Samoa rank
219th
Exposure to outdoor air pollution over time
- Saint Helena
- Samoa
How they compare
Saint Helena currently reports 4.1 µg/m³ against 4.1 µg/m³ in Samoa, a difference of 0 µg/m³.
The two have swapped places 11 times across 27 shared years of data; in 1998 it was Saint Helena ahead.
Saint Helena ranks 219th and Samoa ranks 219th of 241 countries.
Across the 4 decades both report, Saint Helena averaged higher in 3 and Samoa in 1.
Head to head by decade
| Decade | Saint Helena | Samoa | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 3.95 µg/m³ | 3.25 µg/m³ | 0.7 µg/m³ | Saint Helena |
| 2000s | 3.93 µg/m³ | 3.83 µg/m³ | 0.1 µg/m³ | Saint Helena |
| 2010s | 4.09 µg/m³ | 4.06 µg/m³ | 0.03 µg/m³ | Saint Helena |
| 2020s | 3.84 µg/m³ | 3.92 µg/m³ | 0.08 µg/m³ | Samoa |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher exposure to outdoor air pollution, Saint Helena or Samoa?
- Saint Helena, at 4.1 µg/m³ against 4.1 µg/m³ in Samoa as of 2024.
- What is the difference in exposure to outdoor air pollution between Saint Helena and Samoa?
- 0 µg/m³, with Saint Helena ahead.
- How many years of comparable data are there for Saint Helena and Samoa?
- 27 years are reported by both, from 1998 to 2024.
- How do Saint Helena and Samoa rank globally for exposure to outdoor air pollution?
- Saint Helena ranks 219th 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.