According to the latest World Health Organisation estimates on "Ambient (outdoor) air pollution in cities database 2014", Patna is the second most polluted city in the world, in terms of PM2.5 emissions.

Air quality in Hyderabad, India, often exceeds the national ambient air quality standards, especially for particulate matter (PM), which, in 2010, averaged 82.2± 24.6, 96.2± 12.1, and 64.3± 21.2 μg/m3 of PM10, at commercial, industrial, and

In this paper, an analysis of data from continuous ambient air monitoring station in Hyderabad is reported to better understand daily and seasonal trends of particulates and chemistry of ozone pollution in the atmosphere.