Exposure to outdoor air pollution in Comoros
Comoros: Exposure to outdoor air pollution was 10.5 µg/m³ in 2024. ▲ Rising
Exposure to outdoor air pollution in Comoros, 1998–2024
Source: SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data. Measured in µg/m³.
Analysis
In 2024, exposure to outdoor air pollution in Comoros stood at 10.5 µg/m³.
Compared with earlier readings it is up 16.7% on the previous year and up 11.7% over ten years.
Over the whole period, exposure to outdoor air pollution in Comoros peaked at 10.8 µg/m³ in 2011 and was at its lowest, 8.1 µg/m³, in 2004.
Comoros ranks 161st of 241 countries on this measure, in the middle of the range.
The long-run direction has been consistently rising across the 27 years of available data.
Exposure to outdoor air pollution in Comoros, year by year
| Year | µg/m³ | Change |
|---|---|---|
| 1998 | 9.1 µg/m³ | — |
| 1999 | 8.3 µg/m³ | -8.8% |
| 2000 | 8.5 µg/m³ | +2.4% |
| 2001 | 9 µg/m³ | +5.9% |
| 2002 | 8.3 µg/m³ | -7.8% |
| 2003 | 9.2 µg/m³ | +10.8% |
| 2004 | 8.1 µg/m³ | -12.0% |
| 2005 | 8.8 µg/m³ | +8.6% |
| 2006 | 10.5 µg/m³ | +19.3% |
| 2007 | 10.5 µg/m³ | +0.0% |
| 2008 | 9.8 µg/m³ | -6.7% |
| 2009 | 10 µg/m³ | +2.0% |
| 2010 | 9.9 µg/m³ | -1.0% |
| 2011 | 10.8 µg/m³ | +9.1% |
| 2012 | 8.9 µg/m³ | -17.6% |
| 2013 | 9.9 µg/m³ | +11.2% |
| 2014 | 9.4 µg/m³ | -5.1% |
| 2015 | 8.5 µg/m³ | -9.6% |
| 2016 | 8.8 µg/m³ | +3.5% |
| 2017 | 10.2 µg/m³ | +15.9% |
| 2018 | 9.1 µg/m³ | -10.8% |
| 2019 | 9.6 µg/m³ | +5.5% |
| 2020 | 10.1 µg/m³ | +5.2% |
| 2021 | 8.2 µg/m³ | -18.8% |
| 2022 | 10.5 µg/m³ | +28.0% |
| 2023 | 9 µg/m³ | -14.3% |
| 2024 | 10.5 µg/m³ | +16.7% |
Comoros compared with similar countries
- Comoros's 10.5 µg/m³ is below the median for lower middle income countries, which is 24.7 µg/m³, 43% of the median. (47 countries reporting)
- Comoros's 10.5 µg/m³ is below the median for Sub-Saharan Africa, which is 25.2 µg/m³, 42% of the median. (48 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 8.7 µg/m³ | 8.3 µg/m³ | 9.1 µg/m³ | 2 |
| 2000s | 9.27 µg/m³ | 8.1 µg/m³ | 10.5 µg/m³ | 10 |
| 2010s | 9.51 µg/m³ | 8.5 µg/m³ | 10.8 µg/m³ | 10 |
| 2020s | 9.66 µg/m³ | 8.2 µg/m³ | 10.5 µg/m³ | 5 |
Countries ranked near Comoros
More environment data for Comoros
- Historical exposure to drought — Land soil moisture anomaly -9.29 Percentage change (2025)
- Historical exposure to drought — Cropland soil moisture anomaly -6.9 Percentage change (2025)
- Standard Deviation, annual growth rate 0 % change on previous year (2025)
- Standard Deviation 0.264 °C (2025)
- Temperature change 1.59 °C (2025)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), annual 1.33 % change on previous year (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per unit 0 Mt CO2e per US$ of GDP (2024)
- Total greenhouse gas emissions excluding LULUCF (Mt CO2e), per capita 0 Mt CO2e per person (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), annual growth rate 0 % change on previous year (2024)
- Methane (CH4) emissions from Agriculture (Mt CO2e), per unit of GDP 0 Mt CO2e per US$ of GDP (2024)
Frequently asked questions
- What is exposure to outdoor air pollution in Comoros?
- Exposure to outdoor air pollution in Comoros was 10.5 µg/m³ in 2024, according to SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data.
- What is the highest exposure to outdoor air pollution recorded in Comoros?
- The highest recorded value was 10.8 µg/m³ in 2011.
- What is the lowest exposure to outdoor air pollution recorded in Comoros?
- The lowest recorded value was 8.1 µg/m³ in 2004.
- How does Comoros rank for exposure to outdoor air pollution?
- Comoros ranks 161st out of 241 countries with data for 2024.
- Is exposure to outdoor air pollution rising or falling in Comoros?
- Over the last ten years it is up 11.7%. The long-run trend across the full record is rising.
- Where does this Comoros data come from?
- The figures come from SatPM, Atmospheric Composition Analysis Group, Washington University in St. Louis (2026) – with minor processing by Our World in Data, published as part of Exposure to outdoor air pollution. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 27 observations, free to reuse under CC BY 4.0 (Our World in Data).
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.