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 18.5 µg/m³, #74 in the world.

The UK's Daily Air Quality Index (1 to 10), PM2.5 bands. 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	Band
Phnom Penh	≈ 15 µg/m³	Low
Takeo	≈ 18 µg/m³	Low
Siem Reap	≈ 6 µg/m³	Low
Battambang	≈ 9 µg/m³	Low
Paoy Paet	≈ 6 µg/m³	Low
Dangkao	≈ 15 µg/m³	Low
Kampong Chhnang	≈ 10 µg/m³	Low
Sihanoukville	≈ 11 µg/m³	Low
Preaek Prasab	≈ 9 µg/m³	Low
Kampong Cham	≈ 12 µg/m³	Low
Anlong Veaeng	≈ 5 µg/m³	Low
Pursat	≈ 7 µg/m³	Low
Ta Khmau	≈ 15 µg/m³	Low
Phumĭ Yoŭl Toŭng	≈ 17 µg/m³	Low
Phumĭ Véal Srê	≈ 18 µg/m³	Low
Bavet	≈ 17 µg/m³	Low
Kep	≈ 14 µg/m³	Low
Kandoeng	≈ 17 µg/m³	Low
Kampong Speu	≈ 10 µg/m³	Low
Koh Kong	≈ 9 µg/m³	Low
Prey Veng	≈ 14 µg/m³	Low
Suong	≈ 12 µg/m³	Low
Smach Mean Chey	≈ 8 µg/m³	Low
Phumĭ Véal Tônsay	≈ 10 µg/m³	Low
Stung Treng	≈ 7 µg/m³	Low
Boeng Kak Pir	≈ 15 µg/m³	Low
Tbeng Meanchey	≈ 6 µg/m³	Low
Svay Rieng	≈ 16 µg/m³	Low
Sisophon	≈ 8 µg/m³	Low
Dar	≈ 14 µg/m³	Low
Kampot	≈ 9 µg/m³	Low
Phumĭ Tnaôt	≈ 7 µg/m³	Low
Kratié	≈ 9 µg/m³	Low
Kampong Thom	≈ 9 µg/m³	Low
Lumphat	≈ 6 µg/m³	Low
Samraong	≈ 6 µg/m³	Low
Pailin	≈ 7 µg/m³	Low
Mémót	≈ 11 µg/m³	Low
Banlung	≈ 6 µg/m³	Low
Phum Ânlŭng Vĭl	≈ 9 µg/m³	Low

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SmogRank, most polluted cities in Cambodia, PM2.5, last 24 hours to 2 Oct 2026, 05:00 UTC, smogrank.com/kh.

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Updated 2026-10-02 05:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the UK DAQI PM2.5 sub-index.