The AQI of Dhaka is based on 5 criteria pollutants and it had an AQI score of 169 at 8:18 am on Thursday morning.
The 5 criteria pollutants are Particulate Matter (PM10 and PM2.5), NO2, CO, SO2 and Ozone (O3).
Their AQI scores respectively are 495, 405 and 397.
In the recent past, Dhaka has witnessed a lot of development and number of industries have been set up in and around the city.
Rapid industrialisation is one of the reasons for the gradual decline in the air quality of the city.
It is only during the monsoons that the air quality of the city improves a bit.