The air quality of Delhi over the past one week has worsened from moderate and poor to very poor. Particulate Matter (PM) 2.5 and 10 remain the major pollutants.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/delhi%E2%80%99s-air-quality-very-poor
[2] http://admin.indiaenvironmentportal.org.in/category/author/akanksha-jain
[3] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-new-delhi
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/delhi
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/urban-air-quality
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-index-aqi
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/respiratory-diseases
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/ministry-earth-sciences
[9] http://admin.indiaenvironmentportal.org.in/thesaurus/national-green-tribunal-ngt
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution