Bangkok Issues Orange PM2.5 Smog Alert as Air Quality Slips in Three Districts
Bangkok authorities issue an orange-level pollution warning as PM2.5 dust exceeds safety thresholds in three major districts despite rain
- Bangkok authorities have issued an orange-level smog alert as PM2.5 particulate matter exceeded the safety threshold of 37.5 µg/m³.
- The warning is specific to three districts where air quality has deteriorated: Bang Khun Thian (43.4 µg/m³), Phasi Charoen (38.6 µg/m³), and Bueng Kum (37.6 µg/m³).
- The spike in pollution occurred despite recent rainfall, which was insufficient to clear the smog from the atmosphere.
- In response, health officials advise the public to wear protective masks and limit outdoor activities, particularly for vulnerable groups like children and the elderly.
Bangkok authorities issue an orange-level pollution warning as PM2.5 dust exceeds safety thresholds in three major districts despite rain.
Environmental authorities in the capital have issued a fresh pollution alert after ultra-fine particulate matter exceeded safety thresholds, pushing air quality into the orange warning category across three key districts on Saturday morning (October 24).
Despite scattered rainfall covering 30 per cent of the metropolitan area, the precipitation failed to effectively disperse the smog.
According to Krungthep Turakij reporter Panyalak Sriburin, the latest spike has triggered renewed concerns among urban residents as pollutant levels cross safety limits.
Data compiled by the Bangkok Air Quality Information Center between 5:00 AM and 7:00 AM recorded overall readings ranging from 18.6 to 45.1 micrograms per cubic metre (µg/m³), with a city-wide average of 28.9 µg/m³. However, readings taken at 7:00 AM showed an alarming increase compared to the same period on Friday.
Air quality breached the updated regulatory standard of 37.5 µg/m³ to enter the "orange" zone—indicating levels that begin to affect public health—in three specific areas:
Bang Khun Thian District (measured at the District Office on Rama II Road) recorded 43.4 µg/m³.
Phasi Charoen District (located near Siam University on Phetkasem Road) recorded 38.6 µg/m³.
Bueng Kum District (measured within the District Office premises) recorded 37.6 µg/m³.
Health Advisories and Protection Measures
Public health officials have urged residents, particularly vulnerable demographics including children, the elderly, and individuals with pre-existing respiratory conditions, to take immediate precautions.
The general public is advised to wear PM2.5-protective face masks whenever venturing outdoors and to limit prolonged or strenuous physical exertion in open air.
Vulnerable groups have been strongly advised to avoid outdoor activities entirely and seek medical attention immediately if they experience symptoms such as coughing, breathing difficulties, or eye irritation.
Residents can monitor real-time air quality metrics via the AirBKK mobile application, the official website at www.airbkk.com, or the Bangkok Air Quality Information Center's social media channels.
Environmental pollution sources can also be reported directly to municipal authorities through the Traffy Fondue platform.
Meteorological Conditions and Rainfall Summary
According to the Thai Meteorological Department's daily forecast for 24 October 2026, Bangkok and its surrounding vicinity experienced temperatures ranging from a low of 25–27°C to a high of 33–35°C, accompanied by easterly winds moving at 10–20 km/h and a 30 per cent chance of thundershowers.
Over the preceding 24-hour period leading up to 7:00 AM, moderate to heavy rainfall was recorded across various parts of the capital.
The top five heaviest cumulative rainfall measurements included:
Khlong Ratchamontri Pumping Station (Bang Khun Thian District): 43.0 mm
Bang Na - Srinakarin Road Canal (Bang Na District): 24.0 mm
hlong Khun Si - Mahasawat Canal Sluice Gate (Thawi Watthana District): 23.5 mm
Benchasiri Park (Khlong Toei District): 20.0 mm
Phaya Thai District Office: 19.5 mm Municipal authorities reported that despite the downpours, no major stagnant water or drainage bottlenecks were identified along primary thoroughfares.
However, commuters were advised to plan their journeys carefully and carry rain gear.
