Bangkok is preparing early for the PM2.5 season. The Bangkok Metropolitan Administration (BMA) aims to limit unsafe dust days to no more than 20 in 2027, and has instructed all agencies to closely monitor weather patterns and risk factors.

Governor Chadchart Sittipunt stressed the use of modern technology and integrated data to analyze the situation and tackle root causes effectively. While inter-agency cooperation was strong over the past year, this year's dust situation may be more complex, so thorough preparation is needed to protect public health.

To address the issue, the BMA is rolling out four key measures:
Green List:
Compliant 4-wheel and 6-wheel-plus transport trucks can register at https://greenlist.bangkok.go.th to gain access during Low Emission Zone (LEZ) declarations, from 22 October 2026 to 31 March 2027.

Low Emission Zone (LEZ) and Dust Fighting Campaign:
High-polluting vehicles will be restricted during peak periods. The "Dust-Reducing Vehicle" project will run alongside, encouraging drivers to service their vehicles (November 2026 to March 2027).

Environmental Inspectors:
Officers will be deployed to strictly enforce regulations at construction sites, concrete batching plants, factories, boilers, open-burning sites, and vehicle exhaust checkpoints.

Cross-Border Collaboration:
Under the "Bangkok and Beyond" project, the BMA will partner with Nakhon Nayok Province to manage upwind open burning, while monitoring factory emissions through the BKK Industrial Watch system.

Together, these measures focus on monitoring, strict law enforcement, and inter-agency collaboration, to help Bangkok manage its air quality as effectively as possible.