SmogRank / Countries / Thailand / July 2024

Most polluted cities in Thailand, July 2024

3 cities in Thailand ranked by their average PM2.5 over the 31 days. Worst: Chiang Mai at 12.0 µg/m³, #298 of 2,047 cities in the world. Cleanest: Tha Bo at 8.1. A city needs measurements on 70% of the days to be ranked.

  1. 1Chiang Mailow-cost sensorsChiang Mai
    12.0
  2. 2Bangkoklow-cost sensorsBangkok
    10.6
  3. 3Tha BoNong Khai
    8.1
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, July 2024 · Thailand now

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SmogRank, most polluted cities in Thailand, PM2.5, July 2024, smogrank.com/th/history/2024-07 (accessed 2 Oct 2026).

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