Karachis air quality index (AQI) surged to 212, making it the most polluted major city globally, according to the Swiss group IQAirs rankings as reported by The News International.
As per IQAir data, the highest AQI of 306 was recorded at Bedian Road, followed by other heavily polluted areas including the University of Management and Technology (278), Polo Ground Cantt (275), US ...