Updated PM 2.5 dust levels in Bangkok this morning show a downward trend but still exceed standards at an orange level, beginning to affect health in two areas.
3 January 2026 GMT+7 Bangkok Air Quality Information Center The Bangkok Air Quality Monitoring Station reported PM 2.5 dust conditions at 07:00 hrs, with a 24-hour average measurement of particulate matter not exceeding 2.5 microns (PM 2.5).
Measurements ranged from 18.4 to 41.1 micrograms per cubic meter (µg/m³). Two areas exceeded the standard at an orange level, indicating the beginning of health impacts (standard limit is 37.5 µg/m³):
1. Pathumwan District, in front of Samyan Mitrtown Mall: recorded 41.1 µg/m³.
2. Chatuchak District, in front of Kasetsart University: recorded 38.8 µg/m³.
The Air Quality Index from Bangkok's monitoring stations mostly indicates moderate air quality levels.
The Meteorological Department forecasts Bangkok's weather: cool mornings with strong winds and a temperature drop of 1–2 degrees Celsius.
Health advisory: Orange level air quality indicates the start of health effects.
General public: Use protective equipment such as PM 2.5 masks whenever going outdoors, limit time spent on strenuous outdoor activities, and watch for symptoms like coughing, difficulty breathing, or eye irritation.
At-risk groups: Use protective equipment like PM 2.5 masks whenever going outdoors, avoid strenuous outdoor activities, follow medical advice, and seek prompt medical attention if symptoms occur.
Related factors (forecasted meteorological impact on PM 2.5) from 3–11 January 2026 indicate good to light air ventilation with strong winds on some days, so dust concentration is expected to decrease. Today’s forecast is cool mornings with strong winds and a temperature drop of 1–2 degrees Celsius.
Satellite data from NASA show no abnormal heat spots detected over Bangkok, indicating no unusual heat sources contributing to dust.
The Bangkok Environment Office has coordinated with all relevant agencies to intensify enforcement of dust mitigation plans to reduce the severity of the PM2.5 situation and its health impacts. They also encourage public participation and cooperation to change behaviors and reduce dust-producing activities by following “5 Ways to Reduce Dust You Can Do”: 1. Regularly clean your home by dusting; 2. Avoid burning waste or incense; 3. Plant trees to absorb pollutants and trap dust; 4. Use public transport; and 5. Turn off engines when parked and maintain vehicles to prevent excessive smoke emissions.
Alerts and public information encourage people to check air quality before leaving home through:
If the public spots pollution sources, they can report tips via Traffy Fondue.