Areas close to the Delhi Technical University were the most polluted with a severe AQI of 492. The primary pollutant here was PM2.5 on Tuesday morning.
Dilshad Garden had the cleanest air, with an AQI of 312.
"The minimum temperature was recorded at 14.6 degrees Celsius, a notch above normal," a MeT department official said.
Both the Central Pollution Control Board (CPCB) and SAFAR predicted that air quality will start improving from Tuesday and may turn 'very poor', which is a notch better than 'severe'.
Train operations were still affected. Around 10 inbound trains were cancelled, 34 rescheduled, and 73 trains were delayed.