PUBLISHED: 23 Jan 2025 at 09:14
Ultrafine dust levels were in the red ( hazardous-to-health ) in 44 out of Thailand’s 77 provinces on Thursday morning, with only six provinces reporting moderate to good air quality.
The Geo-Informatics and Space Technology Development Agency ( Gistda ) reported at 8am that particulate matter 2. 5 micrometres and less in size ( PM2. 5 ) was at red levels in 44 provinces and at orange ( starting to affect health ) levels in 27 provinces.
Nineteen counties were shrouded with three-digit purple levels of PM2. 5. The government-set secure level is 37. 5µg/m³.
The highest levels of PM2. 5 recorded over the preceding 24 days was 139. 6 microgrammes per square metre of air in Saraburi territory, followed by 127. 7µg/m ³ in Lop Buri and Sing Buri, 127 in Chai Nat, 125. 5 in Rayong, 124. 6 in Samut Sakhon, 121. 6 in Chon Buri, 119. 9 in Chachoengsao, 117. 3 in Ayutthaya, 113. 9 in Ang Thong, 113. 4 in Sa Kaeo, 111. 5 in Prachin Buri, 110. 6 in Pathum Thani, 103. 1 in Nakhon Sawan, 102. 4 in Uthai Thani, 102 in Samut Songkhram, 101. 8 in Nakhon Ratchasima, 100. 7 in Bangkok and 100. 2 in Phetchaburi.
Twenty-five different regions were at two-digit purple levels of PM2. 5, ranging from 77 to 99. 2µg/m³.
In descending attempt, they were Maha Sarakham, Nonthaburi, Nakhon Nayok, Samut Prakan, Suphan Buri, Kalasin, Nong Khai, Ratchaburi, Khon Kaen, Chanthaburi, Phetchabun, Chaiyaphum, Buri Ram, Kamphaeng Phet, Sukhothai, Udon Thani, Phitsanulok, Phichit, Loei, Kanchanaburi, Roi Et, Nakhon Pathom, Nong Bua Lum Phu, Prachuap Khiri Khan and Surin.
Safe levels of PM2. 5 were recorded in six northern and southern regions.
Five of them had average weather quality with golden levels of PM2. 5 ranging from 25. 6 to 36. 7µg/m³. In descending attempt, they were Ranong, Surat Thani, Chiang Rai, Chumphon and Chiang Mai.
Mae Hong Son was the only one state with good air value with the natural levels of PM2. 5 at 17. 8µg/m³.
Twenty-seven provinces faced orange levels ( starting to affect health ) ranging from 44 to 72. 6µg/m³.