Christmas Island vs Norfolk Island: Exposure to outdoor air pollution
Exposure to outdoor air pollution over time
- Christmas Island
- Norfolk Island
How they compare
Christmas Island currently reports 3.7 µg/m³ against 3.5 µg/m³ in Norfolk Island, a difference of 0.2 µg/m³.
That makes Christmas Island's figure about 1.1 times Norfolk Island's.
The two have swapped places 4 times across 27 shared years of data; in 1998 it was Christmas Island ahead.
Christmas Island ranks 229th and Norfolk Island ranks 232nd of 241 countries.
Christmas Island has averaged higher in every one of the 4 decades both report.
Head to head by decade
| Decade | Christmas Island | Norfolk Island | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 4.7 µg/m³ | 4 µg/m³ | 0.7 µg/m³ | Christmas Island |
| 2000s | 4.55 µg/m³ | 3.81 µg/m³ | 0.74 µg/m³ | Christmas Island |
| 2010s | 5.03 µg/m³ | 3.58 µg/m³ | 1.45 µg/m³ | Christmas Island |
| 2020s | 4.26 µg/m³ | 3.76 µg/m³ | 0.5 µg/m³ | Christmas Island |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher exposure to outdoor air pollution, Christmas Island or Norfolk Island?
- Christmas Island, at 3.7 µg/m³ against 3.5 µg/m³ in Norfolk Island as of 2024.
- What is the difference in exposure to outdoor air pollution between Christmas Island and Norfolk Island?
- 0.2 µg/m³, with Christmas Island ahead.
- How many years of comparable data are there for Christmas Island and Norfolk Island?
- 27 years are reported by both, from 1998 to 2024.
- How do Christmas Island and Norfolk Island rank globally for exposure to outdoor air pollution?
- Christmas Island ranks 229th and Norfolk Island ranks 232nd 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.