As visibility remained poor and the city choked due to a haze, the Centre for Science and Environment (CSE) asked the Delhi government to roll out stringent plans for controlling winter pollution from all sources of pollutants and issue daily health advisory to the people.
"This demands emergency response to protect the vulnerable -- those who are suffering from respiratory and heart diseases and children.
CSE said that according to the Indian Meteorological Department, this is the worst smog with very poor visibility in 17 years and the Indira Gandhi International Airport recorded the worst levels of smog in 17 years on November 2, with visibility as low as 300-400 metres.
It said the analysis of data from the Delhi Pollution Control Committee shows that the levels of PM2.5 have increased by 62.7 per cent on November 2 as compared to that on Diwali (October 30) and the levels were 9.4 times the standard on November 2.
Also Read
According to air quality monitoring network SAFAR, PM2.5 levels are in severe category and are expected to remain in this category for more than three days, it said.
"Delhi needs strong action to protect people from such deadly exposure. Immediately step up action and put out hard health evidences and heath alerts in the public domain to sensitise people about the harmful effects of smog and push action.
The CSE said satellite images of NASA's fire mapper have showed that incidences of paddy burning in Punjab, Haryana and Uttar Pradesh have increased after Diwali.
The images clearly revealed that after October 30, crop burning in Punjab, Haryana and Uttar Pradesh became more aggressive which would have contributed to the severe smog in the national capital, it said.
Noting that India has already adopted a system of issuing health advisories, along with its air quality index, the CSE said it was not being utilised to issue alerts to people.
It implies that not only those who are ailing are extremely vulnerable at the current level of pollution, but also the general public who can develop a host of symptoms, it said.
"Schools should be shut, if necessary. Children are more vulnerable. Given their hyper level of physical activities, they inhale more volume of air than adults and therefore, breathe in more pollution.
"Joint studies of Central Pollution Control Board and Chittaranjan National Cancer Research Institute in Kolkata have shown that every third child in Delhi has impaired lungs," the green body said.
It also said that there is a need for pollution emergency plan to cut peak pollution levels and asked the government announce a slew of emergency actions.
Noting that this year has been a lost opportunity with regard to short-to-medium term measures, the CSE said that apart from restrictions on truck entry, no other action has been initiated -- especially on public transport, walking and cycling, parking restraints and other measures related to other pollution sources.
"This cannot be delayed any further. A time-bound action plan will have to be rolled out immediately," it said.