Dhaka, Bangladesh Global: Dhaka has topped the list of cities worldwide with the worst air quality, with an AQI score of 187 at 08:55am today.
According to the air quality and pollution ranking for cities, Dhaka's air was classified as 'unhealthy'.
Pakistan's Lahore, Egypt's Cairo and Bahrain's Manama occupied the second, third and fourth spots on the list, with AQI scores of 177, 163 and 146, respectively.
An AQI between 151 and 200 is considered 'unhealthy' while 201-300 is 'very unhealthy', and 301-400 is considered 'hazardous', posing severe health risks to residents.
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.
The AQI 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.
As 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.
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