The Tamil Nadu Pollution Control Board (TNPCB) will add 25 ambient air quality monitoring stations to its network in the State and the data updates will be available online.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/tnpcb-add-25-air-quality-monitoring-stations
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/hindu-chennai
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/tamil-nadu
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-monitoring
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/nitrogen-dioxide
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chennai-t
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-index-aqi