Bangkok air quality remains good as Chatuchak records highest PM2.5

SUNDAY, OCTOBER 11, 2026
Bangkok air quality remains good as Chatuchak records highest PM2.5

Bangkok's PM2.5 averaged 20.3 µg/m³ on October 11, below the 37.5 µg/m³ standard. All six zones were rated good, with Chatuchak recording the highest reading at 27.3 µg/m³.

  • Bangkok's overall air quality was reported as good, with an average PM2.5 concentration of 20.3 µg/m³, well below the standard limit of 37.5 µg/m³.
  • The district of Chatuchak registered the highest level of fine particulate matter in the city, with a reading of 27.3 µg/m³.
  • Despite variations across the capital, all six of Bangkok's zones recorded good air quality, with pollution levels remaining below the established safety standard.

Bangkok recorded good overall air quality on Sunday (October 11), with the average concentration of fine particulate matter (PM2.5) at 20.3 micrograms per cubic metre (µg/m³), well below the standard limit of 37.5 µg/m³.

The Bangkok Air Quality Information Centre reported the figures at 7am, noting a downward trend in PM2.5 concentrations across the capital. While pollution levels remained below the prescribed limit, concentrations varied between districts.

Chatuchak registered the highest PM2.5 reading in Bangkok at 27.3 µg/m³, followed by Pom Prap Sattru Phai at 27.0 µg/m³ and Bang Khun Thian at 26.8 µg/m³.

Bangkok's 12 districts with the highest PM2.5 readings

The centre's 7am monitoring report ranked the 12 districts with the highest PM2.5 concentrations as follows:

  • Chatuchak: 27.3 µg/m³
  • Pom Prap Sattru Phai: 27.0 µg/m³
  • Bang Khun Thian: 26.8 µg/m³
  • Yan Nawa: 26.7 µg/m³
  • Nong Khaem: 26.6 µg/m³
  • Samphanthawong: 25.4 µg/m³
  • Pathum Wan: 25.2 µg/m³
  • Ratchathewi: 25.2 µg/m³
  • Bueng Kum: 24.7 µg/m³
  • Bang Phlat: 24.4 µg/m³
  • Prawet: 23.8 µg/m³
  • Sathon: 23.2 µg/m³

All six Bangkok zones record good air quality

Air quality was classified as good across all six zones of Bangkok, with PM2.5 concentrations remaining below the established standard despite differences in readings between monitoring locations.

The PM2.5 readings across the six zones were as follows:

  • North Bangkok: 15.3–27.3 µg/m³
  • East Bangkok: 13.8–24.7 µg/m³
  • Central Bangkok: 15.4–27.0 µg/m³
  • South Bangkok: 14.4–26.7 µg/m³
  • North Thon Buri: 15.8–24.4 µg/m³
  • South Thon Buri: 16.7–26.8 µg/m³

Bangkok air quality remains good as Chatuchak records highest PM2.5

PM2.5 levels decline as authorities urge continued monitoring

Despite the improving conditions, the Bangkok Air Quality Information Centre advised residents to continue monitoring air quality updates, particularly before spending extended periods outdoors.

Those sensitive to air pollution were also encouraged to watch for unusual symptoms and reduce their exposure to fine particulate matter when necessary.