New Delhi, Nov. 11 -- Sirsa in Haryana recorded the highest air pollution level among northern cities early Wednesday, placing it in the severe category, while Delhi was in the poor category, according to the official mobile application developed by the Central Pollution Control Board (CPCB) in India.

Sirsa recorded an air quality index (AQI) of 403 at 7.05 am, while Delhi's air quality index stood at 299, per the app, SAMEER.

Hisar (Haryana) ranked second with an AQI of 377, followed by Baghpat in Uttar Pradesh and Panchgaon in Haryana at 342 and 340, respectively. Bhiwani in Haryana recorded an AQI of 335, while Ballabhgarh registered a reading of 323.

Anpara in Uttar Pradesh recorded an AQI of 318. Karnal recorded an AQI of 313, whi...