Summary:
A non-attainment area is an area considered to have air quality worse than the National Ambient Air Quality Standards. He said the air quality in 2018 was better compared to 2016 and 2017. He said on February 10, when the campaign was launched, the air quality was “very poor”. “(But) the air quality never went back to the very poor category after February 12,” he said. New Delhi: Delhi’s air quality did not return to the “very poor” category after the start of the clean air campaign a fortnight ago, Union Environment Minister Harsh Vardhan today said, adding that such campaigns will be replicated in about 100 non-attainment cities in the country..