SmogRank / Countries / Thailand / September 2024

Most polluted cities in Thailand, September 2024

3 cities in Thailand ranked by their average PM2.5 over the 30 days. Worst: Bangkok at 17.3 µg/m³, #48 of 1,555 cities in the world. Cleanest: Tha Bo at 9.4. A city needs measurements on 70% of the days to be ranked.

  1. 1Bangkoklow-cost sensorsBangkok
    17.3
  2. 2Chiang Mailow-cost sensorsChiang Mai
    12.7
  3. 3Tha BoNong Khai
    9.4
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, September 2024 · Thailand now

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SmogRank, most polluted cities in Thailand, PM2.5, September 2024, smogrank.com/th/history/2024-09 (accessed 2 Oct 2026).

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