Thick Smog Shrouds Delhi As Air Quality Index Nears 500 — IN PICS

Delhi's Air Quality Index (AQI) was recorded at 488 at 9 am, according to Central Pollution Control Board (CPCB) data. (Photo: PTI)

Of the 32 monitoring stations in the capital, 31 recorded AQI levels exceeding 480. Two stations, Alipur and Sonia Vihar, maxed out at 500. (Photo: PTI)

Delhi's air quality first entered the 'severe plus' category on Sunday, prompting the implementation of tighter pollution control measures. (Photo: PTI)

These measures include a ban on the entry of trucks except for those carrying essential items or using clean fuel (LNG/CNG/BS-VI diesel/electric), a ban on construction and demolition activities and school closures. (Photo: PTI)

On Monday, Delhi recorded its second-worst air quality in six years with the AQI touching 494. (Photo: PTI)