SmogRank / World / Asia / Cambodia
Most polluted cities in Cambodia
1 measured city, last 24 hours; 1 above the WHO 24-hour guideline. Worst: Chrang Chamreh Muoy at 18.7 µg/m³, #72 in the world.
- 1Chrang Chamreh Muoylow-cost sensorsPhnom Penh 18.71.2×
The European Environment Agency's air quality index bands for PM2.5 (2024 revision); it has bands, not numbers, so values stay in µg/m³. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Estimated: cities without a monitor
Cambodia cities we can't measure, with model estimates for the last 7 days. Listed by population, not ranked: estimates aren't precise enough to rank. Model estimates from the Copernicus Atmosphere Monitoring Service (CAMS), adjusted to measured cities nearby where there are any. Adjusted, a single day lands within ×1.5 of what a monitor would read about two times in three; unadjusted, it can be off by half or double. Treat them as a guide, not a measurement.
| City | 7-day estimate |
|---|---|
| Phnom Penh | ≈ 15 µg/m³ |
| Takeo | ≈ 18 µg/m³ |
| Siem Reap | ≈ 6 µg/m³ |
| Battambang | ≈ 9 µg/m³ |
| Paoy Paet | ≈ 6 µg/m³ |
| Dangkao | ≈ 15 µg/m³ |
| Kampong Chhnang | ≈ 10 µg/m³ |
| Sihanoukville | ≈ 11 µg/m³ |
| Preaek Prasab | ≈ 9 µg/m³ |
| Kampong Cham | ≈ 12 µg/m³ |
| Anlong Veaeng | ≈ 5 µg/m³ |
| Pursat | ≈ 7 µg/m³ |
| Ta Khmau | ≈ 15 µg/m³ |
| Phumĭ Yoŭl Toŭng | ≈ 17 µg/m³ |
| Phumĭ Véal Srê | ≈ 18 µg/m³ |
| Bavet | ≈ 17 µg/m³ |
| Kep | ≈ 14 µg/m³ |
| Kandoeng | ≈ 17 µg/m³ |
| Kampong Speu | ≈ 10 µg/m³ |
| Koh Kong | ≈ 9 µg/m³ |
| Prey Veng | ≈ 14 µg/m³ |
| Suong | ≈ 12 µg/m³ |
| Smach Mean Chey | ≈ 8 µg/m³ |
| Phumĭ Véal Tônsay | ≈ 10 µg/m³ |
| Stung Treng | ≈ 7 µg/m³ |
| Boeng Kak Pir | ≈ 15 µg/m³ |
| Tbeng Meanchey | ≈ 6 µg/m³ |
| Svay Rieng | ≈ 16 µg/m³ |
| Sisophon | ≈ 8 µg/m³ |
| Dar | ≈ 14 µg/m³ |
| Kampot | ≈ 9 µg/m³ |
| Phumĭ Tnaôt | ≈ 7 µg/m³ |
| Kratié | ≈ 9 µg/m³ |
| Kampong Thom | ≈ 9 µg/m³ |
| Lumphat | ≈ 6 µg/m³ |
| Samraong | ≈ 6 µg/m³ |
| Pailin | ≈ 7 µg/m³ |
| Mémót | ≈ 11 µg/m³ |
| Banlung | ≈ 6 µg/m³ |
| Phum Ânlŭng Vĭl | ≈ 9 µg/m³ |
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SmogRank, most polluted cities in Cambodia, PM2.5, last 24 hours to 2 Oct 2026, 04:00 UTC, smogrank.com/kh.
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Updated 2026-10-02 04:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors in µg/m³.