Bangkok air improves, but Pathum Wan and Chatuchak remain in orange alert zone
Bangkok’s average PM2.5 fell to 26.3 µg/m³ on January 3, but Pathum Wan and Chatuchak still exceeded safe levels, prompting an orange-level health advisory.
The Bangkok Air Quality Information Centre on Saturday morning reported that PM2.5 levels have begun to ease across the capital, though air quality remains a concern in some areas.
Bangkok’s average PM2.5 concentration was 26.3 micrograms per cubic metre (µg/m³), below the standard of 37.5 µg/m³. However, two districts recorded levels above the limit, reaching the orange category, which indicates initial health impacts.
Top 12 districts with the highest PM2.5 readings
- Pathum Wan: 41.5 µg/m³
- Chatuchak: 39.3 µg/m³
- Sathorn: 35.7 µg/m³
- Bang Rak: 32.8 µg/m³
- Khlong Sam Wa: 32.5 µg/m³
- Lat Krabang: 31.7 µg/m³
- Bang Sue: 31.7 µg/m³
- Nong Chok: 31.7 µg/m³
- Phasi Charoen: 31.3 µg/m³
- Ratchathewi: 31.1 µg/m³
- Phra Khanong: 30.3 µg/m³
- Prawet: 30.2 µg/m³
Air quality by zone
- North Bangkok: 25.6–39.3 µg/m³ (Overall: moderate)
- East Bangkok: 21.4–32.5 µg/m³ (Overall: moderate)
- Central Bangkok: 20.4–31.1 µg/m³ (Overall: good)
- South Bangkok: 19.3–41.5 µg/m³ (Overall: moderate)
- North Thonburi: 20.3–29.9 µg/m³ (Overall: good)
- South Thonburi: 21.1–31.3 µg/m³ (Overall: good)
The centre said PM2.5 levels are trending downward, with overall air quality rated moderate across Bangkok.
Health advice (orange level: initial health impacts)
General public
- Wear protective gear such as a PM2.5 mask whenever 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 every time you go outdoors.
- Avoid strenuous outdoor activity and follow medical advice.
- Seek medical attention promptly if symptoms occur.
