SmogRank / World / Thailand / November 2023
Most polluted cities in Thailand, November 2023
2 cities in Thailand ranked by their average PM2.5 over the 30 days. Worst: Bangkok at 30.8 µg/m³, #27 of 1,891 cities in the world. Cleanest: Chiang Mai at 27.5. A city needs measurements on 70% of the days to be ranked.
- 1BangkokBangkok 30.8
- 2Chiang MaiChiang Mai 27.5
Good0–9.0
Moderate9.1–35.4
Sensitive groups35.5–55.4
Unhealthy55.5–125.4
Very unhealthy125.5–225.4
Hazardous225.5+
All cities in the world, November 2023 · Thailand now
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SmogRank, most polluted cities in Thailand, PM2.5, November 2023, smogrank.com/th/history/2023-11 (accessed 2 Oct 2026).
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