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
    98
  2. 2Nong KhaemBangkok
    90
  3. 2Khlong Sam WaBangkok
    90
  4. 4Bueng KumBangkok
    86
  5. 5Khan Na YaoBangkok
    85
  6. 6Lat KrabangBangkok
    83
  7. 7Lak SiBangkok
    83
  8. 8Bang NaBangkok
    81
  9. 9Nong ChokBangkok
    81
  10. 10Ban Samae DamBangkok
    80
  11. 11Bang KapiBangkok
    78
  12. 12BangkokBangkok
    75
  13. 12Ban Khlong PrawetBangkok
    75
  14. 12Sai MaiBangkok
    75
  15. 15Mueang NonthaburiNonthaburi
    73
  16. 16Saphan SungBangkok
    73
Good0–50
Satisfactory51–100
Moderate101–200
Poor201–300
Very poor301–400
Severe401+

India's National Air Quality Index (CPCB), PM2.5 sub-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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