LUCKNOW, Nov. 26 -- With an air quality index (AQI) of 389, Hapur was the most polluted city in the country for the second consecutive day on Tuesday.

A day ago, Hapur's AQI fared worse at 416, and it was the only city in the country to fall under the 'severe' category in the Central Pollution Control Board's (CPCB) 4 pm bulletin.

In the state capital too, the air quality remained grim for the second day in a row. From 209 on Monday, the AQI deteriorated to 219 on Tuesday. This marked the second instance this season when Lucknow reported back-to-back 'poor' air quality days-the earlier instance being on November 13 and 14.

Barring Kukrail picnic spot, all live monitoring stations in the city reported poor air quality. Lalbagh and Talka...