Lahore continues to remain on the top of the list of the most polluted cities in the world today having the worst air quality.

According to the Air Quality Index, Lahore has been ranked first in the list with 453 readings, while Indian capital city New Delhi remained second and Kolkata ranked third in the AQI list.

Fog engulfed Lahore’s Allama Iqbal International Airport and poor visibility affected flight operations. Most incoming flights were diverted to Islamabad, Airport Manager said. “International flight QR 628, coming from Doha to Lahore, was also diverted to Islamabad,” an airport official said.

MUHAMMAD AHSAN KAMAL,

Islamabad.