PUBLISHED: 3 Apr 2024 at 11: 27
On Wednesday night, dust levels increased to 200 microgrammes per cubic meter of air, including those in Chiang Mai, in three northern regions, with readings exceeding 200 microgrammes per square meter.
The Geo- Informatics and Space Technology Development Agency ( Gistda ) reported at 9am , that 20 provinces recorded red ( seriously harmful ) levels of particulate matter 2.5 micrometres and less in diameter ( PM2.5 ). They ranged from 76.1 to 227.2 microgrammes per square inch of weather over the past 24 hours. The authorities- set secure threshold is 37.5µg/m³.
The worst levels, 227.2µg/m³, was measured in the northeastern state of Mae Hong Son, followed by 209.2 in Chiang Rai, 208.5 in Chiang Mai, 183.4 in Phayao, 173.8 in Nan, 171.4 in Lamphun, 154.5 in Lampang, 133.3 in Phrae, 110.9 in Uttaradit, 101.8 in Loei, 100.1 in Tak, 96.4 in Nakhon Phanom, 91.0 in Udon Thani, 89.5 in Bueng Kan, 87.0 in Sakon Nakhon, 86.2 in Nong Khai, 86.0 in Nong Bua Lam Phu, 85.5 in Sukhothai, 81.7 in Kalasin and 76.1 in Mukdahan.
Orange ( initially unsafe ) levels of PM2.5 were detected in 19 other provinces. Analyses ranged from 39.1 to 67.9µg/m³.
The counties were, in descending purchase, Khon Kaen, Phitsanulok, Amnat Charoen, Phetchabun, Kamphaeng Phet, Ubon Ratchathani, Maha Sarakham, Chaiyaphum, Roi Et, Yasothon, Kanchanaburi, Uthai Thani, Phichit, Si Sa Ket, Nakhon Ratchasima, Surin, Buri Ram, Nakhon Sawan and Ratchaburi.
Counties in the lower Central Plain, the lower Northeast, the East and the South had mild and nice weather value. The eastern province of Rayong had the best air quality with 15.5µg/m³, followed by Trat with 15.9µg/m ³ also in the East.
The power of crimson- coded PM2.5 amounts was  , higher than on Tuesday.
The image by Gistda indicates the red zones of PM2.5 shroud , the North, the lower Central Plain and the lower Northeast on Wednesday night.