India, Dec. 30 -- Noida's air quality remained "severe" for a third consecutive day, recording a 24-hour average air quality index (AQI) of 410 on Monday and emerging as the country's most polluted city yet again, according to Central Pollution Control Board (CPCB) data.

The average AQI reading in Noida on Sunday was 419, while Saturday registered 409 - "severe" category on both the days.

The air quality across neighbouring NCR towns also saw deterioration. While Greater Noida recorded an AQI of 356, Ghaziabad stood at 393, both in the "very poor" category, according to real-time monitoring data at 4.05pm on Monday.

Within Noida, all four operational air quality monitoring stations reported "very poor" to "severe" pollution levels. The...