Bangkok PM2.5: Chatuchak highest as pollution levels raise health concerns
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.
