It was a foggy morning in the national capital on Thursday with the minimum temperature recorded at 10.5°C, three notches below normal. "As per the notification, entry of heavy and medium goods vehicles into the national capital will be banned from 11pm of November 8 till 11pm of November 11", said Special Commissioner of Transport department K K Dahiya, as reported by The Indian Express.
Authorities in the previous years have rationed private vehicle use and imposed shutdowns on industrial units and coal-run power plants, as well as taxes on lorries to discourage them from using Delhi as a transit route.
The smog over Delhi has thickened in last 48 hours, after the Diwali celebrations which led to an unprecedented increase in the pollution.
Delhi's air quality typically worsens in winter, as clouds of smoke from farmers' fires billow into the city and mix with industrial and traffic emissions to form a noxious cocktail.
All week, traders had been asking for clarification over what green firecrackers were.
Tiny particulate matter can cause major health problems.
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"If Kejriwal government is so serious over effects of cracker bursting on air quality, would it announce a ban on it", he questioned.
The Supreme Court ruled last month that only environmentally friendly crackers - that emit less smoke and soot - can be sold in Delhi, in a bid to cut the smog that has scarred the city's worldwide reputation.
India's Supreme Court last month ruled that only firecrackers that emit less smoke and soot could be sold in the city, in an effort to limit pollution over the festival period. The System of Air Quality and Weather Forecasting And Research said the PM 2.5 and PM 10 levels were also in the severe category.
The Air Quality Index in several locations across Delhi deteriorated further on Friday.
The Supreme Court has allowed bursting of firecrackers from 8 pm to 10 pm only on Diwali and other festivals.
While other cities across north India recorded AQI scores of between 300 and 350, the air was significantly better in central and southern cities - with with the air in Thiruvananthapuram, Kerala, deemed "satisfactory" with a AQI score of only 64.