India, Nov. 8 -- Delhi's air quality worsened on Saturday as pollution levels exceeded the 400-mark in many areas, making the national capital one of the most polluted cities in the country.

The 24-hour average Air Quality Index (AQI), reported at 4 pm every day, stood at 361 on Saturday, according to the Central Pollution Control Board (CPCB). It worsened further to 372 at 6pm.

According to the CPCB's Sameer app, which monitors real-time data from the city's 39 monitoring stations, at least 15 out of the 39 stations in Delhi reported an AQI at or above the 400-mark at 6pm.

These include Alipur (417), ITO (408), Punjabi Bagh (404), Nehru Nagar (407), Patparganj (403), Ashok Vihar (402), Sonia Vihar (401), Jahangirpuri (409), Rohini (40...