Guam vs Marshall Islands: Exposure to outdoor air pollution
Guam
1.9 µg/m³
in 2024
Marshall Islands
2.8 µg/m³
in 2024
Guam rank
239th
Marshall Islands rank
237th
Exposure to outdoor air pollution over time
- Guam
- Marshall Islands
How they compare
Marshall Islands currently reports 2.8 µg/m³ against 1.9 µg/m³ in Guam, a difference of 0.9 µg/m³.
That makes Marshall Islands's figure about 1.5 times Guam's.
Across all 27 years both countries report, Marshall Islands has been ahead every year.
Guam ranks 239th and Marshall Islands ranks 237th of 241 countries.
Marshall Islands has averaged higher in every one of the 4 decades both report.
Head to head by decade
| Decade | Guam | Marshall Islands | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 1.9 µg/m³ | 2.6 µg/m³ | 0.7 µg/m³ | Marshall Islands |
| 2000s | 2.55 µg/m³ | 3.18 µg/m³ | 0.63 µg/m³ | Marshall Islands |
| 2010s | 2.83 µg/m³ | 3.65 µg/m³ | 0.82 µg/m³ | Marshall Islands |
| 2020s | 2.2 µg/m³ | 3.26 µg/m³ | 1.06 µg/m³ | Marshall Islands |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher exposure to outdoor air pollution, Guam or Marshall Islands?
- Marshall Islands, at 2.8 µg/m³ against 1.9 µg/m³ in Guam as of 2024.
- What is the difference in exposure to outdoor air pollution between Guam and Marshall Islands?
- 0.9 µg/m³, with Marshall Islands ahead.
- How many years of comparable data are there for Guam and Marshall Islands?
- 27 years are reported by both, from 1998 to 2024.
- How do Guam and Marshall Islands rank globally for exposure to outdoor air pollution?
- Guam ranks 239th and Marshall Islands ranks 237th 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.