According to the website, most Bangkok districts are now showing green stickers which mean ‘good’ air quality, with PM2.5 down to 26-50 micrograms per cubic metre (µg/m3). Some areas, such as Bang Na, Bang Kapi, Wang Thong Lang, Lat Phrao and Bang Kruay have blue stickers, meaning ‘excellent’ air quality with PM2.5 lower than 25 µg/m3.

Some areas however still have orange stickers indicating that the air is ‘starting to affect health’, such as Rama III Road in Bang Kho Laemistrict.

The website reports air quality in Bangkok on October 2 as ‘medium to excellent’ level.