Chiang Mai tops the chart for highest AQI in the world today

 | Fri 28 Feb 2020 14:40 ICT

CityNews – The PM2.5 particles have blanketed the city today in what is the worst day so far this year for pollution.

According to Chiang Mai has the ignominy today of having the highest air quality index (AQI) levels in the world at 197.