Patna: The air quality index (AQI) in the state capital on Tuesday stood at 476, the highest in the country and probably the highest-ever in the city.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/study-patna%E2%80%99s-air-quality-worst-country-again
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/times-india-patna-0
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/bihar
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/patna-t
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-index-aqi
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/state-pollution-control-board-spcb-0
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pm-25
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-monoxide
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/rspm-pm-10