<div style="text-align: justify; ">Dhaka's air quality has turned ‘moderate’ again.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">With an air quality index (AQI) score of 57 at 9.10am, the metropolis on Saturday ranked 42nd in the list of world cities with the worst air quality.</div><div style="text-align: justify; "><br></div><div style="text-align: justify;">An AQI between 50 and 100 is considered ‘moderate’ with an acceptable air quality. However, there may be a moderate health concern for a very small number of people who are unusually sensitive to air pollution.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Pakistan’s Lahore and Karachi and China’s Beijing occupied the first three spots in the list, with AQI scores of 169, 166, and 161, respectively.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">An AQI between 101 and 200 is considered 'unhealthy', particularly for sensitive groups.</div><div style="text-align: justify;"><br></div><div style="text-align: justify;">Similarly, an AQI between 201 and 300 is said to be 'poor', while a reading of 301 to 400 is considered 'hazardous', posing serious health risks to residents. UNB</div><div style="text-align: justify;"><br></div><div style="text-align: justify; ">bnbd24/kh</div>