Dhaka topped the list of cities worldwide with the worst air quality with an AQI score of 186 at 9:10am on Tuesday.
The capital’s air was unhealthy, according to the air quality and pollution ranking.
Delhi in India, Shenyang of China and Sarajevo of Bosnia Herzegovina occupied the list's second, third and fourth spots, with AQI scores of 181, 177 and 174, respectively.
An AQI score between 151 and 200 is considered unhealthy, 201-300 is very unhealthy and 301-400 is considered hazardous, posing severe health risks to residents.
The AQI reports daily air quality and informs people how clean or polluted the air of a certain city is and what associated health effects might be a concern for them.
The AQI score in Bangladesh is based on five pollutants: particulate matter (PM10 and PM2.5), NO2, CO, SO2 and ozone.
Dhaka has long been grappling with air pollution issues. Its air quality usually turns unhealthy in winter and improves during the monsoon.
Per the World Health Organization (WHO), air pollution kills an estimated seven million people worldwide every year, mainly due to increased mortality from stroke, heart disease, chronic obstructive pulmonary disease, lung cancer and acute respiratory infections.
