A man paddles a home-made boat across Yamuna river on a smoggy morning in the old quarters of Delhi, India November 11, 2019.

A man cleans a pond on a smoggy morning in New Delhi, India November 11, 2019.

A woman crosses a road on a smoggy morning in New Delhi, India, November 12, 2019.

People ride a boat across Yamuna river on a smoggy morning in the old quarters of Delhi, India November 11, 2019. Image used for illustrative purpose.

A bird flies amidst smog near India's Presidential Palace in New Delhi, India, November 13, 2019.

An auto-rickshaw moves past the India Gate on a smoggy morning in New Delhi, India November 11, 2019.

People walk in front of the smog covered India Gate war memorial in New Delhi, India, November 12, 2019.

A woman sits with a child in a park near India Gate, on a smoggy morning, in New Delhi, India, November 13, 2019.

A man uses his handkerchief to cover his face as he walks on a road on a smoggy morning in New Delhi, India November 11, 2019.

An air traffic control tower is pictured on a smoggy morning at the Indira Gandhi International Airport in New Delhi, India, November 12, 2019.