The air quality in 43 districts of the Bangkok metropolitan area is at the “yellow” or moderate level, while seven districts are “green” or good, the Air Quality Information Centre of the Bangkok Metropolitan Administration (BMA) said today.
The centre reported the average PM2.5 levels throughout the city on Thursday at 27.4 micrograms per cubic metre (µg/m³), under the country’s standard of 37.5 µg/m³ over a three-hour average (5am to 7am).
Yesterday’s reading at the same time was at 19.4 µg/m³.
PM2.5 refers to fine particulate matter with a diameter of 2.5 micrometres or less, which can penetrate deep into the lungs and bloodstream, posing health risks such as respiratory and cardiovascular diseases.
Major sources of PM2.5 include traffic emissions, factories, forest fires, and burning of harvest leftovers.
The five districts that reported the highest levels of PM2.5 are Bang Na (37.4 µg/m³), Wang Thong Lang (34.2 µg/m³), Sathorn (33.5 µg/m³), Bangkok Noi (32.7 µg/m³), and Nong Chok (32.7 µg/m³).
Air quality can be checked daily on the AirBKK application, www.airbkk.com, Line Alert, as well as the Facebook page of the BMA’s Environment Department.