Chiang Mai 5th worst globally on air pollution index
Fine dust levels were above the safe threshold of 50 microgrammes per cubic metre (µg/m³) in 55 provinces, bar the South, on Wednesday morning, the Centre for Air Pollution Mitigation reported.
The 55 provinces with unsafe levels of PM2.5 dust as of 7am on Wednesday were: Bangkok, Pathum Thani, Nonthaburi, Nakhon Pathom, Samut Sakhon, Samut Prakan, Chiang Rai, Chiang Mai, Nan, Mae Hong Son, Phayao, Lamphun, Lampang, Phrae, Uttaradit,…
