Exposure to outdoor air pollution in Saint Helena
Saint Helena: Exposure to outdoor air pollution was 4.1 µg/m³ in 2024. ▬ Flat
Exposure to outdoor air pollution in Saint Helena, 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
The most recent figure for exposure to outdoor air pollution in Saint Helena is 4.1 µg/m³, measured in 2024.
That represents a change of up 2.5% on the previous year and up 13.9% over ten years.
Over the whole period, exposure to outdoor air pollution in Saint Helena peaked at 5.3 µg/m³ in 2011 and was at its lowest, 3 µg/m³, in 2001.
Saint Helena ranks 219th of 241 countries on this measure, in the bottom quarter.
Exposure to outdoor air pollution in Saint Helena, year by year
| Year | µg/m³ | Change |
|---|---|---|
| 1998 | 4.2 µg/m³ | — |
| 1999 | 3.7 µg/m³ | -11.9% |
| 2000 | 3.5 µg/m³ | -5.4% |
| 2001 | 3 µg/m³ | -14.3% |
| 2002 | 3.2 µg/m³ | +6.7% |
| 2003 | 3.8 µg/m³ | +18.7% |
| 2004 | 3.6 µg/m³ | -5.3% |
| 2005 | 4.3 µg/m³ | +19.4% |
| 2006 | 4.2 µg/m³ | -2.3% |
| 2007 | 5 µg/m³ | +19.0% |
| 2008 | 4.6 µg/m³ | -8.0% |
| 2009 | 4.1 µg/m³ | -10.9% |
| 2010 | 4.5 µg/m³ | +9.8% |
| 2011 | 5.3 µg/m³ | +17.8% |
| 2012 | 3.8 µg/m³ | -28.3% |
| 2013 | 3.7 µg/m³ | -2.6% |
| 2014 | 3.6 µg/m³ | -2.7% |
| 2015 | 4 µg/m³ | +11.1% |
| 2016 | 3.9 µg/m³ | -2.5% |
| 2017 | 4.1 µg/m³ | +5.1% |
| 2018 | 3.6 µg/m³ | -12.2% |
| 2019 | 4.4 µg/m³ | +22.2% |
| 2020 | 3.4 µg/m³ | -22.7% |
| 2021 | 3.6 µg/m³ | +5.9% |
| 2022 | 4.1 µg/m³ | +13.9% |
| 2023 | 4 µg/m³ | -2.4% |
| 2024 | 4.1 µg/m³ | +2.5% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 3.95 µg/m³ | 3.7 µg/m³ | 4.2 µg/m³ | 2 |
| 2000s | 3.93 µg/m³ | 3 µg/m³ | 5 µg/m³ | 10 |
| 2010s | 4.09 µg/m³ | 3.6 µg/m³ | 5.3 µg/m³ | 10 |
| 2020s | 3.84 µg/m³ | 3.4 µg/m³ | 4.1 µg/m³ | 5 |
Countries ranked near Saint Helena
- 216 Iceland 4.6 µg/m³ compare
- 217 Tuvalu 4.5 µg/m³ compare
- 218 Aland Islands 4.3 µg/m³ compare
- 219 Samoa 4.1 µg/m³ compare
- 221 Cocos Islands 4 µg/m³ compare
- 221 Faroe Islands 4 µg/m³ compare
- 221 Tokelau 4 µg/m³ compare
- 221 Wallis and Futuna 4 µg/m³ compare
More environment data for Saint Helena
- Land use hidden — Other areas 250 Square kilometres (2022)
- Land use hidden — Total area 390 Square kilometres (2022)
- Land use hidden — Cropland 40 Square kilometres (2022)
- Land use hidden — Land area 390 Square kilometres (2022)
- Land use hidden — Permanent meadows and pastures 80 Square kilometres (2022)
- Land use hidden — Naturally regenerating forest 20 Square kilometres (2022)
- Land use hidden — Planted Forest 0 Square kilometres (2022)
- Land use hidden — Forest 20 Square kilometres (2022)
- Exposure to air pollution from human sources 2.46 micrograms per cubic meter (2024)
- People not using improved drinking water sources 37.13 people (2024)
Frequently asked questions
- What is exposure to outdoor air pollution in Saint Helena?
- Exposure to outdoor air pollution in Saint Helena was 4.1 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 Saint Helena?
- The highest recorded value was 5.3 µg/m³ in 2011.
- What is the lowest exposure to outdoor air pollution recorded in Saint Helena?
- The lowest recorded value was 3 µg/m³ in 2001.
- How does Saint Helena rank for exposure to outdoor air pollution?
- Saint Helena ranks 219th out of 241 countries with data for 2024.
- Is exposure to outdoor air pollution rising or falling in Saint Helena?
- Over the last ten years it is up 13.9%. The long-run trend across the full record is flat.
- Where does this Saint Helena 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.