Bangkok’s air quality centre reports PM2.5 readings on January 19, with Chatuchak recording the highest level and health advice issued for residents and at-risk groups.
Bangkok’s Air Quality Information Centre reported PM2.5 (fine particulate matter of 2.5 microns or less) in the capital at 07:00 on January 19, 2026.
The Bangkok-wide average was 33.7 micrograms per cubic metre (µg/m³), against the standard of 37.5 µg/m³.
Top 12 PM2.5 readings by district
- Chatuchak – 49.0 µg/m³
- Pathum Wan – 45.3 µg/m³
- Lat Krabang – 44.4 µg/m³
- Bang Rak – 41.6 µg/m³
- Lak Si – 40.5 µg/m³
- Sathon – 40.2 µg/m³
- Ratchathewi – 39.6 µg/m³
- Khlong Sam Wa – 39.1 µg/m³
- Phra Nakhon – 38.9 µg/m³
- Bang Sue – 38.5 µg/m³
- Prawet – 38.4 µg/m³
- Sai Mai – 37.9 µg/m³
PM2.5 by zone
North Bangkok: 31.5-49.0 µg/m³
Overall: levels beginning to affect health
East Bangkok: 28.9-44.4 µg/m³
Overall: moderate
Central Bangkok: 27.1-39.6 µg/m³
Overall: moderate
South Bangkok: 27.2-45.3 µg/m³
Overall: moderate
North Thonburi: 25.7-36.6 µg/m³
Overall: moderate
South Thonburi: 23.4-34.0 µg/m³
Overall: moderate
Health advice
General public: Wear protective equipment such as a PM2.5 mask when outdoors. Limit time spent on strenuous outdoor activities or exercise. Watch for symptoms such as coughing, breathing difficulty, or eye irritation.
At-risk groups: Wear a PM2.5 mask whenever outdoors. Avoid strenuous outdoor activities and follow medical advice. Seek medical attention promptly if symptoms develop.