This morning's update on PM 2.5 levels in Bangkok shows exceedance of the standard at the orange level, with health effects beginning in four areas.
On 17 December 2025 GMT+7, the Bangkok Air Quality Information Center reported the PM 2.5 situation from Bangkok's air quality monitoring stations at 07:00. The 24-hour average concentration of PM2.5 particles was recorded.
Measurements ranged from 21.2 to 47.1 micrograms per cubic meter (µg/m³). Four areas showed levels exceeding the standard at the orange level, indicating health effects (standard limit is 37.5 µg/m³). These areas are:
1. Sathorn district, at the intersection in front of Sathorn District Office, Soi Saint Louis Road: recorded 47.1 µg/m³.
2. Bang Kho Laem district, at the police booth at Talat Road intersection: recorded 41.2 µg/m³.
3. Bang Rak district, beside the police booth in front of Bang Rak Lovely Plaza: recorded 39.6 µg/m³.
4. Pathumwan district, in front of Samyan Mitrtown shopping mall: recorded 38.0 µg/m³.
Most air quality monitoring stations in Bangkok showed air quality at a moderate level.
The Meteorological Department forecasts light fog in the morning across Bangkok.
Health advisory: With air quality at the orange level, health effects are beginning.
General public: Use personal protective equipment such as PM2.5 masks whenever outdoors. Limit the duration of outdoor or strenuous exercise activities. Monitor for abnormal symptoms like coughing, difficulty breathing, or eye irritation.
At-risk groups: Use personal protective equipment such as PM2.5 masks whenever outdoors. Avoid strenuous outdoor activities or exercise. Follow medical advice and seek prompt medical attention if symptoms occur.
Related factors (forecasted weather trends affecting PM2.5 from 17-25 December 2025): Ventilation conditions are mostly "weak/poor." The atmospheric layer near the surface is closed with some strong winds on certain days. PM levels are expected to be moderate to low. Today’s forecast includes light morning fog.
Satellite data from NASA monitoring hotspots shows no abnormal heat sources detected over Bangkok's area.
The Environment Office has coordinated with all relevant agencies to intensify operations under the dust pollution control plan to mitigate the severity of PM2.5 pollution and its potential health impacts. The public and all sectors are encouraged to participate by changing behaviors and reducing activities that generate dust, following the “5 Ways to Reduce Dust You Can Do”: 1. Regularly clean your home by dusting, 2. Avoid burning waste and incense, 3. Plant trees to absorb pollution and capture dust, 4. Use public transportation, and 5. Turn off engines while parked and maintain vehicles to prevent excessive smoke emissions.
Alerts and public information encourage people to check air quality before leaving home via:
If the public observes any pollution sources, they can report clues through Traffy Fondue.