SmogRank / Countries / Cambodia

Most polluted cities in Cambodia

1 measured city, last 7 days; 1 above the WHO 24-hour guideline. Worst: Chrang Chamreh Muoy at 24.3 µg/m³, #93 in the world.

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	Moderate
Takeo	≈ 18 µg/m³	Moderate
Siem Reap	≈ 6 µg/m³	Good
Battambang	≈ 9 µg/m³	Good
Paoy Paet	≈ 6 µg/m³	Good
Dangkao	≈ 15 µg/m³	Moderate
Kampong Chhnang	≈ 10 µg/m³	Moderate
Sihanoukville	≈ 11 µg/m³	Moderate
Preaek Prasab	≈ 9 µg/m³	Moderate
Kampong Cham	≈ 12 µg/m³	Moderate
Anlong Veaeng	≈ 5 µg/m³	Good
Pursat	≈ 7 µg/m³	Good
Ta Khmau	≈ 15 µg/m³	Moderate
Phumĭ Yoŭl Toŭng	≈ 17 µg/m³	Moderate
Phumĭ Véal Srê	≈ 18 µg/m³	Moderate
Bavet	≈ 17 µg/m³	Moderate
Kep	≈ 14 µg/m³	Moderate
Kandoeng	≈ 17 µg/m³	Moderate
Kampong Speu	≈ 10 µg/m³	Moderate
Koh Kong	≈ 9 µg/m³	Good
Prey Veng	≈ 14 µg/m³	Moderate
Suong	≈ 12 µg/m³	Moderate
Smach Mean Chey	≈ 8 µg/m³	Good
Phumĭ Véal Tônsay	≈ 10 µg/m³	Moderate
Stung Treng	≈ 7 µg/m³	Good
Boeng Kak Pir	≈ 15 µg/m³	Moderate
Tbeng Meanchey	≈ 6 µg/m³	Good
Svay Rieng	≈ 16 µg/m³	Moderate
Sisophon	≈ 8 µg/m³	Good
Dar	≈ 14 µg/m³	Moderate
Kampot	≈ 9 µg/m³	Moderate
Phumĭ Tnaôt	≈ 7 µg/m³	Good
Kratié	≈ 9 µg/m³	Moderate
Kampong Thom	≈ 9 µg/m³	Good
Lumphat	≈ 6 µg/m³	Good
Samraong	≈ 6 µg/m³	Good
Pailin	≈ 7 µg/m³	Good
Mémót	≈ 11 µg/m³	Moderate
Banlung	≈ 6 µg/m³	Good
Phum Ânlŭng Vĭl	≈ 9 µg/m³	Good

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SmogRank, most polluted cities in Cambodia, PM2.5, last 7 days to 1 Oct 2026, 23:00 UTC, smogrank.com/kh?w=7d.

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Updated 2026-10-01 23:07 UTC. Values are PM2.5 in µg/m³ (fine particles), the median of each city's monitors.