The average AQI in Chiang Mai by 9am this morning was 120, with Mae Jaem District showing levels of PM 2.5 at a hazardous 395 micrograms per square cubic metre. In total there are currently 2,166 hot spots sighted across the 17 Northern provinces, with 338 in Lampang, 249 in Chiang Mai and nearly 2,000 spots in national parks and forestry lands.
According to AQI indexes, Chiang Mai has been ranked amongst the most polluted cities in the world in recent days
