Choking smog in 55 provinces

Smog obscures the view of highrises along Naradhiwas Rajanagarindra Road in Bangkok on Wednesday earlymorning. (Photo: Suchit Leesa-nguansuk) People in 55 of the 77 provinces were breathing unclean air on Wednesday earlymorning, with red-coded contamination levels in 20 provinces, primarily in the Central Plains. The Geo-Informatics and Space Technology Development Agency (Gistda) reported at 9am that risky levels of particle matter 2.5 micrometres and less in size (PM2.5) varied from 38.7 to 113.6 microgrammes per cubic metre of air over the previous 24 hours. The government-set safe limit is 37.5µg/m³. On Tuesday earlymorning there was major air contamination
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