According to reports, more than 20 trains were delayed and at least eight flights diverted due to low visibility.

The Supreme Court has ordered all Delhi-NCR governments to ensure strict implementation of GRAP Stage IV rules amid rising air pollution levels. The curbs will remain in place even if air quality index falls below the ‘severe plus’ mark of 450.

India's capital city of Delhi has virtually shut down as air pollution hit "severe plus" levels, according to Indian government officials in its pollution control authority.