Reunion vs Saint Helena: Exposure to air pollution from human sources
Exposure to air pollution from human sources over time
- Reunion
- Saint Helena
How they compare
Reunion currently reports 2.66 micrograms per cubic meter against 2.46 micrograms per cubic meter in Saint Helena, a difference of 0.2 micrograms per cubic meter.
That makes Reunion's figure about 1.1 times Saint Helena's.
The two have swapped places 4 times across 27 shared years of data; in 1998 it was Reunion ahead.
Reunion ranks 215th and Saint Helena ranks 218th of 240 countries.
Reunion has averaged higher in every one of the 4 decades both report.
Head to head by decade
| Decade | Reunion | Saint Helena | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 2.65 micrograms per cubic meter | 2.46 micrograms per cubic meter | 0.185 micrograms per cubic meter | Reunion |
| 2000s | 2.78 micrograms per cubic meter | 2.37 micrograms per cubic meter | 0.408 micrograms per cubic meter | Reunion |
| 2010s | 3.34 micrograms per cubic meter | 2.44 micrograms per cubic meter | 0.903 micrograms per cubic meter | Reunion |
| 2020s | 2.73 micrograms per cubic meter | 2.16 micrograms per cubic meter | 0.572 micrograms per cubic meter | Reunion |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher exposure to air pollution from human sources, Reunion or Saint Helena?
- Reunion, at 2.66 micrograms per cubic meter against 2.46 micrograms per cubic meter in Saint Helena as of 2024.
- What is the difference in exposure to air pollution from human sources between Reunion and Saint Helena?
- 0.2 micrograms per cubic meter, with Reunion ahead.
- How many years of comparable data are there for Reunion and Saint Helena?
- 27 years are reported by both, from 1998 to 2024.
- How do Reunion and Saint Helena rank globally for exposure to air pollution from human sources?
- Reunion ranks 215th and Saint Helena ranks 218th of 240 countries.
- Where does this data come from?
- Energy Policy Institute at the University of Chicago (EPIC) (2026) – with minor processing by Our World in Data, published as Exposure to air pollution from human sources. 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. This data excludes natural sources of PM2.5, such as dust and sea salt, to focus on human-caused pollution.