New Delhi, Jan. 11 -- Air pollution activists and experts are unhappy with the National Clean Air Programme (NCAP) launched by Union environment minister Harsh Vardhan Thursday as it is not legally binding for states to meet the targets and the plan lacks ambition.

The NCAP aims to reduce the concentration of PM 2.5 (fine pollution particles) and PM 10 (coarse particles) in 102 non-attainment cities (those that didn't meet the annual PM 10 national standard from 2011 to 2015) by 20%-30% by 2024 over 2017 annual average levels but will have a participatory and collaborative approach. The ministry's media statement added that this target is tentative.

"This is a scheme and not a legal document. The Central Pollution Control Board already ha...