Check PM 2.5 dust levels this morning in Bangkok found exceeding standards at orange level, with health impacts beginning in one area.
4 Jan 2026 GMT+7 Bangkok Air Quality Information Center Summary of PM 2.5 measurements at 07:00 showed dust levels ranging from 18.2 to 39.3 micrograms per cubic meter (µg/m³). Levels are trending downward compared to the same time yesterday. One area exceeded the standard at orange level, indicating beginning health impacts (standard limit 37.5 µg/m³): Pathum Wan district in front of Samyan Mitrtown mall, with a level of 39.3 µg/m³.
Health advisory: Air quality at orange level indicates beginning health effects.
General public: Use personal protective equipment such as PM 2.5 masks whenever going outdoors. Limit time spent on strenuous outdoor activities or exercise. Monitor for abnormal symptoms such as coughing, difficulty breathing, or eye irritation.
At-risk groups: Use personal protective equipment such as PM 2.5 masks whenever going outdoors. Avoid strenuous outdoor activities or exercise. Follow medical advice and seek medical attention promptly if symptoms occur.
Related factors (weather forecast affecting PM 2.5) from 4 to 9 Jan: ventilation conditions are "weak/good" with occasional strong winds, so dust concentration is expected to start decreasing. Today’s morning weather is forecast to be cool.
Satellite hotspot data from NASA shows no abnormal heat spots detected in Bangkok area indicating no unusual heat sources on the ground.
Public is advised to check air quality information before leaving home via
If citizens observe pollution sources, they can report tips through Traffy Fondue.
