The AQI in Bangladesh is based on five pollutants: particulate matter (PM10 and PM2.5), NO2, CO, SO2 and ozone.
Dhaka has been grappling with the problem of air pollution for a long time. Its air quality usually turns unhealthy in winters and improves during monsoons.
According to the World Health Organization (WHO), air pollution kills an estimated seven million people worldwide each year, primarily through increased mortality from stroke, heart disease, chronic obstructive pulmonary disease, lung cancer, and acute respiratory infections. Cause