New Delhi, Nov. 13 -- Delhi's air quality deteriorated to hazardous levels on Friday morning, with the overall Air Quality Index (AQI) touching 494 at 7:31 AM, while dense fog and pollution shrouded the national capital, reducing visibility across several areas. Several parts of the city also recorded severe pollution levels.

According to the Central Pollution Control Board (CPCB), among the worst-affected areas, IIT Delhi recorded an AQI of 488, followed by ITO at 455, Anand Vihar at 419, Rohini at 413 and Rajokri Border at 402, all falling in the severe category.

Other areas also reported very poor air quality, with R K Puram recording an AQI of 391, Mandir Marg 378, Dwarka Expressway 369, Uttam Nagar 363 and Lodhi Road 341.

Area aro...