Pollution levels on Saturday were the worst in the season so far.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/worst-smog-decades-chokes-delhi
[2] http://admin.indiaenvironmentportal.org.in/category/author/bindu-shajan-perappadan
[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/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rspm-pm-10
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/centre-science-and-environment-cse
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/cancer
[10] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-standards