The CPCB said 22 areas recorded ‘severe’, while 13 witnessed ‘very poor’ air
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/delhi%E2%80%99s-air-quality-turns-%E2%80%98severe%E2%80%99-again
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-index-aqi
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/indian-institute-tropical-meteorology
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-standards