This is the first time that visibility has dropped to 'zero' in the national capital this winter season.

Delhi CM Arvind Kejriwal had launched the campaign in October to curb rising air pollution.

It is well-proven that pollution is related to mortality, says Balram Bhargava

PM2.5 refers to fine particulate matter less than 2.5 microns in diameter which can penetrate deep into lungs, impairing their function, and even the bloodstream.

Shashi Tharoor said that air quality is not a class issue but a mass issue and politicians should not ignore it as the poor are the biggest victims of smog and air pollution.

India is currently under the biggest lockdown with around 1.3 billion people asked to stay home in view of the coronavirus outbreak.

The air quality in Delhi improved marginally on Monday but remained in the "poor" category for the second consecutive day.

The pollution levels in the National Capital Region have hit the uppermost limits of instruments that measure these levels. The situation in other cities and towns in the IGP may, in fact, be worst than Delhi.

The apex court said it was a question of life and death of crores of people and governments had to be held responsible.

'How long will you sustain on cigarettes, bidis and cigars. Come and spend a few days in Delhi.'

Chief Minister Arvind Kejriwal termed Delhi a "gas chamber" and blamed stubble burning in neighbouring Haryana and nearby Punjab for the apocalyptic haze shrouding the city.

To tackle air pollution, the centre and states will have to work jointly and quickly. Human lungs don’t understand nuances of federalism and partisan politics.

Mentioning that reducing pollution is in the national interest, Minister of Road Transport and Highways Nitin Gadkari said that it was not correct to blame only vehicles for the problem of pollution

The maximum temperature on Wednesday was recorded at 21.3 degrees Celsius, a notch above the season's average.

In view of the city's severe air quality, authorities have advised people to minimise outdoor activities and avoid use of private vehicles.

Not only does your hair and skin take a beating this season, but with pollution in the air it adds to the damage. Experts offer advice

According to the Central Pollution Control Board (CPCB), Delhi continued to breathe 'very poor' air with the AQI (Air Quality Index) being at 358. The major air pollutants were PM 2.5 and PM 10.