The court also ruled that firecrackers could only be set off between 8:00 pm and 10:00 pm, but their bangs were still reverberating around city neighbourhoods well after midnight.
The MeT department said mist and smog cover was reported at all three airports of the city with the lowest visibility of 400-700m recorded between 7 am and 9 am. The AQI in Anand Vihar was 585, 343 in RK Puram and 467 in the area around the US Embassy.
The national capital woke up to a yet another smoggy morning on Friday with the air quality in the "severe" category. AQI in several parts of the Delhi and its nearby areas was similar.
As the denizens of Mumbai did not show any restraint in bursting crackers, the quality of air plummeted, entering the poor category of air quality. The top court also allowed manufacture and sale of just "green crackers" which have low emission of light, sound and harmful chemicals.
A level of 50 or less is considered safe.
PG&E: Transmission Line Issue Happened Near Origin Of Camp Fire
She said a group of 20 other patients were initially evacuated but then returned to the facility because of gridlocked traffic. Right now, 500 firefighters are working to put out the conflagration, with support from 100 other law enforcement officials.
A "very poor" AQI translates into spike in respiratory illnesses and if the air quality dips further, the AQI turns "severe", which troubles healthy individuals and seriously affects those with health issues. Armed with decibel meters and air quality measurement devices, volunteers scrambled as people rushed to burst crackers, many even wearing masks.
The indices mostly measure the concentration of tiny poisonous particulate matter, or PM 2.5, particles that are less than 2.5 microns in diameter, which can be carried deep into the lungs. According to its prediction system, Delhi's average PM2.5 level, hovering around 303 micrograms per cubic metre, could spike to 340 on Saturday, while the PM10 level, recorded at 440 micrograms per cubic metre on Friday, could jump to 494 on Saturday.
After the Diwali festival, levels of airborne PM 10 and PM 2.5 touched 470 and 322 respectively, up from 438 and 180 in 2018, the Central Pollution Control Board said in a bulletin.
A member of Kejriwal's party, the Aam Aadmi (Common Man) Party (AAP), told Reuters that the chief minister was not in the city. Large swathes of India's northern states remained under dense smog that has shut hundreds of thousands of schools, disrupted air and railway services and forced residents to stay indoors.