Bangkok PM2.5 nears limit; Wang Thonglang tops readings
Bangkok’s PM2.5 average was 36.1 µg/m³ at 7.00am on February 22, 2026, with several districts in the “orange” health-impact zone.
Bangkok PM2.5 update (February 22, 2026)
The Bangkok Air Quality Center reported that PM2.5 levels in the capital averaged 36.1 micrograms per cubic metre (µg/m³) at 7.00am on February 22, 2026, close to the standard of no more than 37.5 µg/m³.
The air-quality level was classified as orange, meaning it is beginning to affect the general public, with some districts recording higher concentrations than the city average.
Highest PM2.5 districts
The 12 areas with the highest PM2.5 readings were led by Wang Thonglang (44.1 µg/m³), followed by Prawet (44.0) and Bang Khun Thian (43.5). Other districts in the top group included Bang Phlat (42.7), Lat Krabang (42.7), Lak Si (42.4), Ratchathewi (42.0), Bang Sue (41.1), Pathum Wan (40.4), Nong Chok (40.4), Bang Rak (40.1) and Phra Nakhon (40.1).
Regional picture across Bangkok
By zone, PM2.5 ranged between:
- North Bangkok: 35.7–42.4 µg/m³ (overall: beginning to affect health)
- East Bangkok: 27.7–44.0 µg/m³ (overall: moderate)
- Central Bangkok: 29.1–44.1 µg/m³ (overall: moderate)
- South Bangkok: 27.2–40.4 µg/m³ (overall: moderate)
- North Thonburi: 30.3–42.7 µg/m³ (overall: moderate)
- South Thonburi: 31.1–43.5 µg/m³ (overall: moderate)
Health advice: orange-level air quality
Residents were advised to wear a PM2.5 mask outdoors, limit strenuous outdoor activity, and monitor symptoms such as coughing, breathing difficulty or eye irritation. At-risk groups were urged to avoid heavy outdoor exertion, follow medical advice, and seek medical care promptly if symptoms develop.
