SmogRank / World / Thailand / January 2025

Most polluted cities in Thailand, January 2025

16 cities in Thailand ranked by their average PM2.5 over the 31 days. Worst: Tha Bo at 58.8 µg/m³, #23 of 2,121 cities in the world. Cleanest: Saphan Sung at 43.6. A city needs measurements on 70% of the days to be ranked.

← Tha Bo 58.8
Every city in Thailand ranked for January 2025, one column each, worst on the left and cleanest on the right. Point at it to read a city; tap to open it.
  1. 1Tha BoNong Khai
    80
  2. 2Nong KhaemBangkok
    74
  3. 2Khlong Sam WaBangkok
    74
  4. 4Bueng KumBangkok
    71
  5. 5Khan Na YaoBangkok
    71
  6. 6Lat KrabangBangkok
    69
  7. 7Lak SiBangkok
    69
  8. 8Bang NaBangkok
    68
  9. 9Nong ChokBangkok
    67
  10. 10Ban Samae DamBangkok
    66
  11. 11Bang KapiBangkok
    66
  12. 12BangkokBangkok
    63
  13. 12Ban Khlong PrawetBangkok
    63
  14. 12Sai MaiBangkok
    63
  15. 15Mueang NonthaburiNonthaburi
    62
  16. 16Saphan SungBangkok
    61
Excellent0–50
Good51–100
Lightly polluted101–150
Moderately polluted151–200
Heavily polluted201–300
Severely polluted301+

China's Air Quality Index (HJ 633-2012), PM2.5 individual index. Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales

All cities in the world, January 2025 · Thailand now

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SmogRank, most polluted cities in Thailand, PM2.5, January 2025, smogrank.com/th/history/2025-01 (accessed 2 Oct 2026).

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