SmogRank / Countries / Thailand / September 2023

Most polluted cities in Thailand, September 2023

3 cities in Thailand ranked by their average PM2.5 over the 30 days. Worst: Tha Bo at 111.4 µg/m³, #1 of 1,830 cities in the world. Cleanest: Chiang Mai at 10.7. A city needs measurements on 70% of the days to be ranked.

  1. 1Tha BoNong Khai
    111.4
  2. 2Bangkoklow-cost sensorsBangkok
    11.5
  3. 3Chiang Mailow-cost sensorsChiang Mai
    10.7
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 2023 · Thailand now