Dhaka, the densely populated capital of Bangladesh, has once again topped the list of cities in the world with the worst air quality.
Dhaka’s air quality index (AQI) was recorded at 219 at 8:54 am today.
India’s Delhi and Pakistan’s Lahore occupied the next two spots, with AQI scores of 197, and 179, respectively.
Dhaka’s air quality ‘unhealthy’, 5th worst in the world this morning
An AQI between 151 and 200 is said to be ‘unhealthy’ while 201 and 300 is considered ‘very unhealthy’, and 301 to 400 is ranked 'hazardous', posing serious health risks to residents.
In Bangladesh, the AQI is based on five criteria 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.
Dhaka's air quality 'moderate' this morning
As per the World Health Organization (WHO), air pollution kills an estimated seven million people worldwide every year, largely as a result of increased mortality from stroke, heart disease, chronic obstructive pulmonary disease, lung cancer and acute respiratory infections.
Dhaka's air quality continues to be 'moderate'