Chiang Mai had the world’s worst air pollution with 198 microgrammes of particulate matter 2.5 micrometres and less in diameter (PM2.5) per cubic metre of air over the 24 hours ending at 4am on Sunday, according to a leading pollution website.
The IQAir.com website ranked the northern province the most polluted on earth based on the amount of fine dust measured over the 24-hour period. Trailing in Chiang Mai’s dust were Baghdad with 193µg/m3, Delhi 180µg/m3, Jakarta 174µg/m3, Kolkata 171µg/m3 and Lahore 170µg/m3.
People in Chiang Mai have been unable to see the iconic Doi Suthep…
