Karachi ranked third on the United States Air Quality Index on Friday morning, grouped among the world's most polluted cities. Global scales typically rank good air quality between a 0-50 AQI. Poor air quality can have detrimental effects on public health and air pollution has been deemed the greatest environmental health risk currently by the World Health Organisation. Jawad Memon, of a private weather station, told The Express Tribune on Friday that the air pollution in the port city is likely to increase due to smog and low humidity. In 2019, Pakistan ranked as the country with the world's second worst air quality with an average AQI of 156.

Source: The Express Tribune November 14, 2020 05:26 UTC