While researching drones and windspeed happened across a link to Air Quality revealing worst spots here on a global listing
https://en.wikipedia.org/wiki/List_o..._concentration
A tad behind Delhi number one and Fresno at 160 we have in world rankings
256 C Rai no doubt related to annual burning
273 Ayutthaya
277 Thailand Saraburi
313 Thailand Phrae
356 Thailand Lampang
371 Thailand Nakhon Ratchasima
378 Thailand Phayao
456 Thailand Pathum Thani
458 Thailand Lamphun
493 Thailand Samut Sakhon
505 Thailand Nan
529 Thailand Chiang Mai
532 Thailand Samut Prakan
For comparison lower than Annnemasse Brno or San Bernadino
Krung Thep at
590 Thailand Bangkok
these were 2012 and perhaps taken in a redbillshot can noowhere near KlongToey?