Apart from a few pristine summer days last year when PM2.5 levels in Shanghai fell below 25, our city's air quality tends not to be very breathable.
Links:
[1] http://admin.indiaenvironmentportal.org.in/news/staying-indoors-not-solution-shanghai%E2%80%99s-air-pollution
[2] http://admin.indiaenvironmentportal.org.in/category/newspaper/global-times-china
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/china
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/health-effects
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-monitoring
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/pm-25
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/carbon-dioxide
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-index-aqi