According to the System of Air Quality and Weather Forecasting And Research (SAFAR), the AQI in the overall Delhi region was in the 'very poor' category at 323.
Delhi government has banned the production, storage, sale, and bursting of firecrackers this year as well and imposed fines and jail terms in case of violation.
On Diwali morning, Delhiites woke up to see a blanket of smog as the air quality remained in the poor category with the overall air quality index (AQI) at 276.
The Delhi Fire Department has deployed its fire tenders near congested areas in the national capital on Diwali as a precautionary measure, said officials on Monday.