Exposure to outdoor air pollution in Guam
Guam: Exposure to outdoor air pollution was 1.9 µg/m³ in 2024. ▲ Rising
Exposure to outdoor air pollution in Guam, 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
The most recent figure for exposure to outdoor air pollution in Guam is 1.9 µg/m³, measured in 2024.
Compared with earlier readings it is down 17.4% on the previous year and down 44.1% over ten years.
Over the whole period, exposure to outdoor air pollution in Guam peaked at 3.7 µg/m³ in 2015 and was at its lowest, 1.8 µg/m³, in 1998.
Guam ranks 239th of 241 countries on this measure, in the bottom quarter.
The long-run direction has been consistently rising across the 27 years of available data.
Exposure to outdoor air pollution in Guam, year by year
| Year | µg/m³ | Change |
|---|---|---|
| 1998 | 1.8 µg/m³ | — |
| 1999 | 2 µg/m³ | +11.1% |
| 2000 | 2.1 µg/m³ | +5.0% |
| 2001 | 2.3 µg/m³ | +9.5% |
| 2002 | 2.5 µg/m³ | +8.7% |
| 2003 | 2.4 µg/m³ | -4.0% |
| 2004 | 2.8 µg/m³ | +16.7% |
| 2005 | 2.7 µg/m³ | -3.6% |
| 2006 | 2.9 µg/m³ | +7.4% |
| 2007 | 2.7 µg/m³ | -6.9% |
| 2008 | 2.5 µg/m³ | -7.4% |
| 2009 | 2.6 µg/m³ | +4.0% |
| 2010 | 2.6 µg/m³ | +0.0% |
| 2011 | 2.8 µg/m³ | +7.7% |
| 2012 | 2.8 µg/m³ | +0.0% |
| 2013 | 2.7 µg/m³ | -3.6% |
| 2014 | 3.4 µg/m³ | +25.9% |
| 2015 | 3.7 µg/m³ | +8.8% |
| 2016 | 2.7 µg/m³ | -27.0% |
| 2017 | 2.9 µg/m³ | +7.4% |
| 2018 | 2.5 µg/m³ | -13.8% |
| 2019 | 2.2 µg/m³ | -12.0% |
| 2020 | 2 µg/m³ | -9.1% |
| 2021 | 2.3 µg/m³ | +15.0% |
| 2022 | 2.5 µg/m³ | +8.7% |
| 2023 | 2.3 µg/m³ | -8.0% |
| 2024 | 1.9 µg/m³ | -17.4% |
Guam compared with similar countries
- Guam's 1.9 µg/m³ is below the median for high income countries, which is 10.3 µg/m³, 18% of the median. (85 countries reporting)
- Guam's 1.9 µg/m³ is below the median for East Asia & Pacific, which is 8.9 µg/m³, 21% of the median. (37 countries reporting)
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1990s | 1.9 µg/m³ | 1.8 µg/m³ | 2 µg/m³ | 2 |
| 2000s | 2.55 µg/m³ | 2.1 µg/m³ | 2.9 µg/m³ | 10 |
| 2010s | 2.83 µg/m³ | 2.2 µg/m³ | 3.7 µg/m³ | 10 |
| 2020s | 2.2 µg/m³ | 1.9 µg/m³ | 2.5 µg/m³ | 5 |
Countries ranked near Guam
- 236 Pitcairn 3.1 µg/m³ compare
- 237 Marshall Islands 2.8 µg/m³ compare
- 238 Micronesia (country) 2.3 µg/m³ compare
- 240 Northern Mariana Islands 1.5 µg/m³ compare
- 241 Greenland 1.1 µg/m³ compare
More environment data for Guam
- Historical exposure to drought — Land soil moisture anomaly 0.5909 Percentage change (2025)
- Paper and paperboard — Import quantity 461 t (2024)
- Wood-based panels — Import quantity 1,035 m3 (2024)
- Wood-based panels — Import value 445 1000 USD (2024)
- Plywood and LVL — Import quantity 1,033 m3 (2024)
- Plywood and LVL — Import value 434 1000 USD (2024)
- Paper and paperboard — Export quantity 0 t (2024)
- Graphic papers — Import quantity 430 t (2024)
- Paper and paperboard — Export value 1 1000 USD (2024)
- Veneer sheets — Import quantity 0 m3 (2024)
Frequently asked questions
- What is exposure to outdoor air pollution in Guam?
- Exposure to outdoor air pollution in Guam was 1.9 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 Guam?
- The highest recorded value was 3.7 µg/m³ in 2015.
- What is the lowest exposure to outdoor air pollution recorded in Guam?
- The lowest recorded value was 1.8 µg/m³ in 1998.
- How does Guam rank for exposure to outdoor air pollution?
- Guam ranks 239th out of 241 countries with data for 2024.
- Is exposure to outdoor air pollution rising or falling in Guam?
- Over the last ten years it is down 44.1%. The long-run trend across the full record is rising.
- Where does this Guam 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.