Bangkok: This morning, the air quality in Bangkok has reached alarming levels, with PM 2.5 dust recorded at the red level, significantly impacting health in three areas and starting to affect health in 67 additional areas. Residents are being urged to wear masks and limit outdoor activities due to the poor air quality conditions.
According to Thai News Agency, the Bangkok Air Quality Information Center has reported that particulate matter measuring no more than 2.5 microns (PM 2.5) was recorded at the Bangkok Air Quality Monitoring Station. As of 7:00 a.m. on Tuesday, January 21, 2025, the 24-hour average of PM 2.5 levels was measured between 43.2 and 94.6 micrograms per cubic meter (µg/m3). This measurement far exceeds the standard of 75.1 µg/m3, indicating a red-level alert in three districts: Nong Khaem, Thawi Watthana, and Sai Mai.
Specifically, the Nong Khaem District recorded values as high as 94.6 µg/m3 at the intersection near the police station on Ma Charoen Road, Phetkasem 81. In Thawi Watthana District, the entrance to Sanam Luang 2 showed levels of 78.5 µg/m3, while the Sai Mai District's bus stop in front of the district office registered 76.1 µg/m3.
Additionally, 67 areas have exceeded the standard at the orange level, beginning to impact health. Notable districts include Phasi Charoen, with levels of 73.3 µg/m3 in front of Siam University, and Bang Khun Thian, where the district office recorded 73.2 µg/m3. Other affected areas are Taling Chan, Bang Bon, and Lat Krabang, all showing concerning PM 2.5 measurements.
The report also highlights relevant factors affecting the PM 2.5 levels. From January 21 to 26, 2025, ventilation in the city is expected to remain in the "poor-weak" range, with continuous inversions near the surface limiting the dispersion of air pollution. However, it is predicted that dust particle concentration will fluctuate slightly during this period and decrease on January 27-28, as better ventilation conditions are anticipated.