Bangkok: PM2.5 levels have soared in 36 provinces, requiring continued monitoring. The Pollution Control Department revealed today that PM2.5 levels exceeded the standard in 36 provinces across Thailand. This is due to low dust dispersion rates and transboundary haze carried by winds. Monitoring is expected to remain critical in some areas of upper Thailand over the next seven days.
According to Thai News Agency, the Air Pollution Control Communication Center (APCC) reported the air quality situation on January 19, 2026, at 12:00 PM. PM2.5 levels exceeded the standard in 36 provinces nationwide, with a tendency to increase in many areas between January 20-26. The public is advised to reduce outdoor activities and refrain from all types of burning.
A total of 36 provinces were identified where PM2.5 levels surpassed the threshold of 37.5 micrograms per cubic meter. These provinces include Phitsanulok, Uthai Thani, Pathum Thani, Nonthaburi, Bangkok, and others. The Pollution Control Department provided regional particulate matter levels, with the Northern Region recording 6.7 - 43.4 µg/m³ and the Southern Region maintaining a good status between 15.9 - 19.9 µg/m³.
The Meteorological Department indicated that the weakening cold front has led to low particulate matter dispersion, worsened by transboundary haze. However, an incoming cold air mass expected from January 21st might improve conditions, though continuous monitoring is required.
For the forecast period of January 20-26, 2026, PM2.5 levels are anticipated to rise in several regions, particularly in Bangkok and surrounding areas, the Central region, and the Northern and Eastern Regions. The Southern Region's outlook remains positive.
Public health recommendations include monitoring health conditions, reducing outdoor activities, and using protective equipment like N95 masks. Vulnerable groups should take additional precautions and seek medical advice if necessary.
The National Energy Policy Office (NEPO) is collaborating with agencies to enforce a ban on burning in forest and agricultural areas and is inspecting industrial facilities and vehicles. The public is encouraged to stay informed through the Air4Thai and AirBKK applications.