PM2.5 (particles less than 2.5 micrometres in diameter) readings were in the range of 29-61 micrograms per cubic metre (μg/m3). Thailand’s standard for safe levels of PM2.5 is 50 μg/m3 or lower.
Eight districts are Nong Khaem (61 μg/m3), Khlong Sam Wa (54 μg/m3), Phasi Charoen (53 μg/m3), Pom Prap Sattru Phai (52 μg/m3), Taling Chan (52 μg/m3), Bangkok Yai (51 μg/m3), Thawi Watthana (51 μg/m3) and Bang Bon (51 μg/m3).
The PM2.5 situation can be followed on Air4Thai.com and bangkokairquality.com websites, CAPM Facebook page, or via Air4Thai and AirBKK smartphone applications.