Also Read - Dhaka’s air quality improves significantly
South Africa’s Johannesburg, Pakistan’s Lahore and Indonesia’s Jakarta occupied the first three spots in the list of cities with the worst air quality with AQI scores of 155, 153 and 149 respectively.
The AQI, an index for reporting daily air quality, informs people how clean or polluted the air of a certain city is, and what associated health effects might be a concern for them.
In Bangladesh, the AQI is based on five criteria pollutants – Particulate Matter (PM10 and PM2.5), NO2, CO, SO2, and Ozone (O3).
Bangladesh has a subtropical monsoon climate characterized by wide seasonal variations in rainfall, high temperatures and humidity.
Dhaka’s air starts getting fresh when rainfalls begin from mid-June. The air remains mostly acceptable during monsoon season from June to October.