The Centre for Science and Environment (CSE) said that the scheme has to be implemented quickly as the "clock is ticking."
Presenting his fifth straight budget in the Lok Sabha, Union Finance Minister Arun Jaitley said that a special scheme will be executed with the Delhi government and adjoining states to address the rising air pollution in the national capital.
"The scheme is welcome. The Environment Pollution (Prevention and Control) Authority (EPCA) has already endorsed the report of the sub-committee set up by the Prime Minister's Office on this issue.
"However, the scheme has to be implemented quickly - the machines must come before next winter, the season when stubble burning is usually at its peak. The clock is ticking," CSE, director general, Sunita Narain said.
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"Air pollution is not a problem that afflicts just the Delhi-NCR region and its adjoining states - every major city in India is now burdened with it," she said.
Clean Air Campaigner, Greenpeace India, Sunil Dahiya, said that mention of air pollution as a cause of concern by the finance minister showed some hope.
"However, not mentioning the National Clean Air Program (NCAP) which the government committed to late last year in Parliament or not announcing any budgetary allocation for the same was a disappointment," he said.
Dahiya claimed that 580 million people in India do not have a single air quality monitoring station in the districts they live in.
"Minister's budget speech should have addressed the need to increase monitoring stations across the country," he said.
He pointed out that while agricultural 'Biomass Burning' was an important issue to tackle, fighting air pollution requires efforts to bring down pollution from many sources such as vehicles, coal-fired power plants, industries and brick kilns.
"We are running out of time to act on air pollution and every single days delay is leading to environmental, public health and economic loss to the country which will have a huge impact on India's dreams to become a leader for tomorrow," he added.
The Energy and Resources Institute (TERI) said that the government must recognise that air pollution is not an NCR issue alone.
"Delhi is only one of the seven Indian cities in the top 15 most polluted cities globally as measured by PM2.5 levels (WHO database of 2016).
"This overall low ranking - 177 among 180 countries - was linked to poor performance in the environmental health policy and deaths due to air pollution categories," TERI said.
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