BANGKOK – On the morning of February 2,  dense smog severely reduced visibility at Bangkok’s Don Mueang International Airport, causing several flights to be diverted to Suvarnabhumi International Airport in Samut Prakan.t 7 a.m., visibility at Don Mueang dropped to 150 meters, making safe landings challenging. Some flights that attempted to land at Don Mueang were forced to circle above the airport, awaiting improved conditions before landing.

Escalating PM2.5 Levels Pose Health Risks

The Bangkok Air Quality Information Centre reported that in the morning PM2.5 levels in several areas of Bangkok reached concentrations harmful to health, with an average of 56.1 micrograms per cubic meter of air. By February 3, the average PM2.5 level in Bangkok stood at 47.2 µg/m³, with all areas classified in the orange zone, indicating unhealthy conditions.

Contributing Factors to the Smog

Experts identify multiple factors contributing to the elevated PM2.5 levels in Bangkok, including transportation emissions, industrial activities, biomass burning, and stagnant air resulting from temperature inversion—a phenomenon where a layer of warm air traps pollutants near the ground.

Government Initiatives to Combat Air Pollution

In response to the deteriorating air quality, Bangkok authorities have implemented measures such as offering free public transport to reduce the number of private vehicles on the roads. Additionally, over 350 schools were closed to protect students from the hazardous air.

Weather Outlook and Air Quality Forecast

The Bangkok Air Quality Information Centre forecasts that between January 29 and February 3, 2025, weather conditions will be unfavorable for air circulation due to a sustained temperature inversion at high altitude, limiting the dispersion of pollutants. As a result, PM2.5 levels are expected to remain stable or increase during this period.

Residents are advised to monitor air quality updates regularly and take necessary precautions, such as wearing masks and limiting outdoor activities, to protect their health during this period of heightened air pollution.  (zai)