The overall air quality in the national capital on Sunday morning was recorded in the `poor category`, with the Air Quality Index (AQI) at 266, a significant increase from 173 recorded on Saturday.

According to the System of Air Quality and Weather Forecasting and Research (SAFAR), the air quality in Kartavya Path at India Gate was recorded at 266, IGI Terminal T3 in New Delhi at 276. Meanwhile, Noida recorded an AQI of 290 (poor) and Gurugram 152 (moderate). Anand Vihar breached the `very poor` category in New Delhi with an AQI of 345, ITO with an AQI of 309, New Moti Bagh with an AQI of 360, and Dwarkar Sector-8 recorded an AQI of 313.