Exposure to outdoor air pollution in American Samoa
American Samoa: Exposure to outdoor air pollution was 3.8 µg/m³ in 2024. ▲ Rising
Exposure to outdoor air pollution in American Samoa, 1998–2024
Source: SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data. Measured in µg/m³.
Analysis
In 2024, exposure to outdoor air pollution in American Samoa stood at 3.8 µg/m³.
The figure is down 5.0% on the previous year and up 5.6% over ten years.
Over the whole period, exposure to outdoor air pollution in American Samoa peaked at 4.2 µg/m³ in 2015 and was at its lowest, 2.4 µg/m³, in 1999.
American Samoa ranks 226th of 241 countries on this measure, in the bottom quarter.
The long-run direction has been consistently rising across the 27 years of available data.
Exposure to outdoor air pollution in American Samoa, year by year
| Year | µg/m³ | Change |
|---|---|---|
| 1998 | 3.1 µg/m³ | — |
| 1999 | 2.4 µg/m³ | -22.6% |
| 2000 | 3.2 µg/m³ | +33.3% |
| 2001 | 3.4 µg/m³ | +6.2% |
| 2002 | 3.2 µg/m³ | -5.9% |
| 2003 | 3.4 µg/m³ | +6.2% |
| 2004 | 3.4 µg/m³ | +0.0% |
| 2005 | 3.7 µg/m³ | +8.8% |
| 2006 | 3.9 µg/m³ | +5.4% |
| 2007 | 3.8 µg/m³ | -2.6% |
| 2008 | 3.4 µg/m³ | -10.5% |
| 2009 | 3.5 µg/m³ | +2.9% |
| 2010 | 3.7 µg/m³ | +5.7% |
| 2011 | 3.4 µg/m³ | -8.1% |
| 2012 | 3.3 µg/m³ | -2.9% |
| 2013 | 3.4 µg/m³ | +3.0% |
| 2014 | 3.6 µg/m³ | +5.9% |
| 2015 | 4.2 µg/m³ | +16.7% |
| 2016 | 3.8 µg/m³ | -9.5% |
| 2017 | 4 µg/m³ | +5.3% |
| 2018 | 4 µg/m³ | +0.0% |
| 2019 | 3.8 µg/m³ | -5.0% |
| 2020 | 3.5 µg/m³ | -7.9% |
| 2021 | 2.9 µg/m³ | -17.1% |
| 2022 | 4.1 µg/m³ | +41.4% |
| 2023 | 4 µg/m³ | -2.4% |
| 2024 | 3.8 µg/m³ | -5.0% |
American Samoa compared with similar countries
- American Samoa's 3.8 µg/m³ is below the median for high income countries, which is 10.3 µg/m³, 37% of the median. (85 countries reporting)
- American Samoa's 3.8 µg/m³ is below the median for East Asia & Pacific, which is 8.9 µg/m³, 43% of the median. (37 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 2.75 µg/m³ | 2.4 µg/m³ | 3.1 µg/m³ | 2 |
| 2000s | 3.49 µg/m³ | 3.2 µg/m³ | 3.9 µg/m³ | 10 |
| 2010s | 3.72 µg/m³ | 3.3 µg/m³ | 4.2 µg/m³ | 10 |
| 2020s | 3.66 µg/m³ | 2.9 µg/m³ | 4.1 µg/m³ | 5 |
Countries ranked near American Samoa
More environment data for American Samoa
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.25 °C (2025)
- Temperature change 1 °C (2025)
- Cropland — Area per capita 0.06 ha/cap (2024)
- Total fisheries production 1,527 metric tons (2024)
- Arable land — Area 1.68 1000 ha (2024)
- Arable land — Share in Agricultural land 62.07 % (2024)
- Permanent crops — Area 0.99 1000 ha (2024)
- Permanent meadows and pastures — Share in Agricultural land 1.26 % (2024)
- Pesticides (total) — Import value 40.9 1000 USD (2024)
Frequently asked questions
- What is exposure to outdoor air pollution in American Samoa?
- Exposure to outdoor air pollution in American Samoa was 3.8 µg/m³ in 2024, according to SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data.
- What is the highest exposure to outdoor air pollution recorded in American Samoa?
- The highest recorded value was 4.2 µg/m³ in 2015.
- What is the lowest exposure to outdoor air pollution recorded in American Samoa?
- The lowest recorded value was 2.4 µg/m³ in 1999.
- How does American Samoa rank for exposure to outdoor air pollution?
- American Samoa ranks 226th out of 241 countries with data for 2024.
- Is exposure to outdoor air pollution rising or falling in American Samoa?
- Over the last ten years it is up 5.6%. The long-run trend across the full record is rising.
- Where does this American Samoa data come from?
- The figures come from SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data, published as part of Exposure to outdoor air pollution. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 27 observations, free to reuse under CC BY 4.0 (Our World in Data).
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.