On Tuesday night, 13 of the provinces, notably those in the North, were blanketed with really harmful levels of pollution, while the other 50 provinces were covered in dangerous levels of PM2.5 dust.
The nicest air was in Phuket, and the worst reading was in Mae Hong Son.
The highest levels of particulate matter, measured at 159.1 microgrammes per square meter of weather over the past 24 hours, was discovered in the northeastern province of Mae Hong Son, which was reported at 9am by the Geo-Informatics and Space Technology Development Agency. The authorities- set protected threshold is 37.5µg/m³.
Mae Hong Son was among 13 provinces, mostly in the North, blanketed with red ( seriously harmful ) levels of PM2.5.
The others were Chiang Rai with 153.6µg/m³, followed by Chiang Mai ( 149.5 ), Lamphun ( 130.9 ), Phayao ( 126.6), Nan ( 116.6), Lampang ( 111.8 ), Phrae ( 101.5 ), Tak (91.7 ), Uttaradit (89.5 ), Loei (83.1 ), Sukhothai ( 77.7 ) and Ubon Ratchathani ( 75.8 ).
Orange ( initially unsafe ) levels of PM2.5 were detected in 37 other provinces in the North, the Northeast and the Central Plain. The rates ranged from 37.7 to 73.9µg/m³.
The counties were, in a descending purchase, Nong Bua Lam Phu, Udon Thani, Bueng Kan, Nong Khai, Kalasin, Si Sa Ket, Phitsanulok, Khon Kaen, Phetchabun, Kamphaeng Phet, Maha Sarakham, Yasothon, Sakon Nakhon, Chaiyaphum, Roi Et, Mukdahan, Amnat Charoen, Phichit, Uthai Thani, Nakhon Phanom, Surin, Nakhon Ratchasima, Nakhon Sawan, Buri Ram, Kanchanaburi, Chai Nat, Lop Buri, Nakhon Nayok, Prachin Buri, Ratchaburi, Phetchaburi, Suphan Buri, Sing Buri, Sa Kaeo, Samut Songkhram, Prachuap Khiri Khan and Saraburi.
Other regions in the lower Central Plain, the East, and the South had mild and nice weather value. Phuket had the best air quality with 19.6µg/m ³ of PM2.5.