Vehicles ply on Safdarjung flyover, during cold morning, amid hazy weather conditions, in New Delh. Pollution level in the national capital has been recorded in 'unhealthy' categor...

A farmer burns paddy stubble in a field, in Chandigarh.

A Civil Defence volunteer holds a placard during 'Red Light On, Gaadi Off' campaign, launched by Delhi Government to tackle air pollution, in New Delhi.

Delhi Environment Minister Gopal Rai (C) and AAP leader Imran Hussain (2R) along with Civil Defence volunteers during 'Red Light On, Gaadi Off' campaign, launched by Delhi Governme...

Vehicles ply on a street, amid hazy weather conditions, in Ghaziabad. The national capital has recorded below night time temperature for the past few days and it is likely to fall ...

A view of city buildings, amid hazy weather conditions, at Dwarka expressway area in Gurugram.

A man walks along a road in the backdrop the Red Fort amid hazy weather conditions, in New Delhi.

A man rides a cycle as commuters cross a road in front of the historic Red Fort during hazy weather conditions, in New Delhi.

Civil Defence volunteers hold a placard as part of a campaign 'Red Light On, Gaadi Off', launched by Delhi Government to tackle air pollution, in New Delhi.

Delhi Environment Minister Gopal Rai participates in the 'Red Light On, Gaadi Off' campaign, launched by Delhi Government to tackle air pollution, in New Delhi.

A young volunteer gives a rose to a auto-rickshaw driver to obey traffic rules as part of a campaign 'Red Light On, Gaadi Off', launched by Delhi Government to tackle air pollution...

Delhi Environment Minister Gopal Rai gives a rose to a commuter urging him to obey traffic rules as part of a campaign 'Red Light On, Gaadi Off', launched by Delhi Government to ta...

A Civil Defence volunteer gives a rose to a commuter to obey traffic rules as part of a campaign 'Red Light On, Gaadi Off', launched by Delhi Government to tackle air pollution, in...

A metro train runs on its track amid hazy weather conditions, in New Delhi.

A cyclist rides near India Gate amid hazy weather conditions, in New Delhi.

View of the Jama Masjid shrouded in haze, in New Delhi.

Fitness enthusiasts walk at Rajpath amid hazy weather conditions, in New Delhi.

A farmer burns paddy stubble in a field, in Jabalpur

Farmers burn paddy stubble in their fields near Bahadurgarh in Patiala district.

Civil Defence volunteers display placards during the 'Red Light On, Gaadi Off' campaign, launched by the Delhi Government to control the air pollution, in New Delhi.