Bangkok Post

PM2.5 IN BANGKOK

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Weather

PM 2.5 has been a problem for over a decade and intensifie­s during the cool season. Currently, high pressure from China covering Bangkok from December to early February prevents PM2.5 from rising up and being dispersed at a higher altitude.

Vehicles

The major source of PM2.5 in Bangkok is from transporta­tion and burning, according to the Pollution Control Department.

Constructi­on

Dust particles from constructi­on sites are bigger than PM2.5 but still cause pollution. Major infrastruc­ture projects including the Skytrain and subway systems are paralysing traffic across the city, which does worsen PM2.5 levels.

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