Smog Blankets Delhi, Air Quality Slips To 'Severe' Category — IN PICS

Delhiites woke up on Thursday to a thick envelope of smog as air quality in the national capital and its adjoining areas, dipped into severe category again. (Source: ANI)

The Air Quality Index (AQI) in the national capital at 8 am was 364 ('Very Poor' category) and at 7 am the recorded AQI stood at 408 ('Severe'). (Source: ANI)

An AQI between 401 and 500 is categorized as severe. (Source: ANI)

Gurugram's AQI stood at 318 and continued to remain in the 'very poor category.(Source: ANI)

Noida'a AQI slipped to 393, 'very poor' category, according to SAFAR. (Source: ANI)

The National Commission for Protection of Child Rights (NCPCR) has urged the Delhi government to shut schools till air quality improves. (Source: ANI)