Ariyalur, the land of fossils, is found to be embedded with rich limestone deposits. Hence around 9 cement factories have been established in and around Ariyalur. This becomes one of the source of air pollution in this area.

Monitoring of ambient air quality and noise pollution was conducted at 'Asselmetta junction' in Visakhapatnam city (Andhra Pradesh), which is heart of the city with an important traffic junction and a well known business center. In this area, monitoring was done for 10 days over RSPM, TSPM, NOx and SO2 levels in the air using 'noiseless repirable dust sampler' and for 4 days over noise pollution levels using 'sound level meter'.

Due to decades of neglect and indifference, air quality in Indian cities has worsened rapidly, triggering a serious public health crisis. Central and state governments are still at a loss in dealing with the problem and except Delhi, no city is taking effective steps to control pollution. Even in Delhi, the drive to deal with pollution is not coming from the government but the Supreme Court. Recently, high courts in Karnataka and Uttar Pradesh have clamped down on the polluting three-wheelers by either banning them or pushing them to run on cleaner fuels.