<div style="text-align: justify; "><span style="font-size: 1rem;">Dhaka, the overcrowded capital city of Bangladesh, has topped the list of cities with the worst air quality with an AQI index of 170 at 9:30am today.</span><br></div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Dhaka’s air was classified as 'unhealthy', according to the air quality and pollution city ranking.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Iraq's Baghdad, India’s Kolkata and United Arab Emirates’ Dubai occupied the second, third and fourth spots on the list, with AQI scores of 164, 163 and 157, respectively.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">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.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">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.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">The AQI in Bangladesh is based on five pollutants: particulate matter (PM10 and PM2.5), NO2, CO, SO2, and ozone.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Dhaka has long been grappling with air pollution issues. Its air quality usually turns unhealthy in winter and improves during the monsoon.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">As per 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. UNB</div><div style="text-align: justify;"><br></div><div style="text-align: justify; ">bnbd24/kh</div>