If you go by NDMC's smart city concept note, its goal is to achieve WHO's air quality standard of 10 micrograms per cubic metre for PM 2.5 by 2025.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/experts-challenge-ndmc-smart-city-plan
[2] http://admin.indiaenvironmentportal.org.in/category/author/jayashree-nandi
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/smart-city
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/who
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/environmentalists
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indian-institute-technology-iit
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/lowcost-housing
[11] http://admin.indiaenvironmentportal.org.in/category/thesaurus/habitat-and-urbanisation