Comoros vs Portugal: Exposure to outdoor air pollution
Comoros
10.5 µg/m³
in 2024
Portugal
10.5 µg/m³
in 2024
Comoros rank
161st
Portugal rank
161st
Exposure to outdoor air pollution over time
- Comoros
- Portugal
How they compare
Comoros currently reports 10.5 µg/m³ against 10.5 µg/m³ in Portugal, a difference of 0 µg/m³.
The two have swapped places 6 times across 27 shared years of data; in 1998 it was Portugal ahead.
Comoros ranks 161st and Portugal ranks 161st of 241 countries.
Across the 4 decades both report, Comoros averaged higher in 2 and Portugal in 2.
Head to head by decade
| Decade | Comoros | Portugal | Difference | Ahead |
|---|---|---|---|---|
| 1990s | 8.7 µg/m³ | 11.9 µg/m³ | 3.2 µg/m³ | Portugal |
| 2000s | 9.27 µg/m³ | 11.66 µg/m³ | 2.39 µg/m³ | Portugal |
| 2010s | 9.51 µg/m³ | 9.35 µg/m³ | 0.16 µg/m³ | Comoros |
| 2020s | 9.66 µg/m³ | 8.94 µg/m³ | 0.72 µg/m³ | Comoros |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher exposure to outdoor air pollution, Comoros or Portugal?
- Comoros, at 10.5 µg/m³ against 10.5 µg/m³ in Portugal as of 2024.
- What is the difference in exposure to outdoor air pollution between Comoros and Portugal?
- 0 µg/m³, with Comoros ahead.
- How many years of comparable data are there for Comoros and Portugal?
- 27 years are reported by both, from 1998 to 2024.
- How do Comoros and Portugal rank globally for exposure to outdoor air pollution?
- Comoros ranks 161st and Portugal ranks 161st 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.