Nauru vs Tonga: Exposure to outdoor air pollution
Nauru
3.8 µg/m³
in 2024
Tonga
3.8 µg/m³
in 2024
Nauru rank
226th
Tonga rank
226th
Exposure to outdoor air pollution over time
- Nauru
- Tonga
How they compare
Nauru currently reports 3.8 µg/m³ against 3.8 µg/m³ in Tonga, a difference of 0 µg/m³.
The two have swapped places 12 times across 27 shared years of data; in 1998 it was Tonga ahead.
Nauru ranks 226th and Tonga ranks 226th of 241 countries.
Across the 4 decades both report, Nauru averaged higher in 1 and Tonga in 3.
Head to head by decade
| Decade | Nauru | Tonga | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 3.3 µg/m³ | 3.85 µg/m³ | 0.55 µg/m³ | Tonga |
| 2000s | 3.77 µg/m³ | 4.11 µg/m³ | 0.34 µg/m³ | Tonga |
| 2010s | 4.58 µg/m³ | 3.68 µg/m³ | 0.9 µg/m³ | Nauru |
| 2020s | 3.7 µg/m³ | 3.88 µg/m³ | 0.18 µg/m³ | Tonga |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher exposure to outdoor air pollution, Nauru or Tonga?
- Nauru, at 3.8 µg/m³ against 3.8 µg/m³ in Tonga as of 2024.
- What is the difference in exposure to outdoor air pollution between Nauru and Tonga?
- 0 µg/m³, with Nauru ahead.
- How many years of comparable data are there for Nauru and Tonga?
- 27 years are reported by both, from 1998 to 2024.
- How do Nauru and Tonga rank globally for exposure to outdoor air pollution?
- Nauru ranks 226th and Tonga ranks 226th 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.