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बेसिक इंग्लिश का दूसरा सत्र (कक्षा प्रारंभ : 22 अक्तूबर, शाम 3:30 से 5:30)
Air pollution not just problem of Delhi but a national problem
Jan 18, 2017

In news:

A  report released by green peace shows that over 90 per cent of the cities studied had pollution levels higher than the prescribed standards.

More from the report:

  • According to an analysis of 2015 data for 168 cities , 154 were found to have an average particulate matter level higher than the national standard. 
  • None of the cities studied had air quality matching the standard prescribed by the World Health Organisation. Hasan in Karnataka came closest to the standard. 



  • Delhi was found to be be the most polluted city, with the annual average for PM10 being 268 micrograms per cubic metre, or over four times the 60 micrograms/cubic metre limit prescribed in the National Ambient Air Quality Standards of the Central Pollution Control Board.
  • Ghaziabad, Allahabad and Bareilly in Uttar Pradesh and Faridabad in Haryana followed closely, making for the worst five cities in terms of PM10 levels, the annual average concentrations being four times or more than the standard.
  • While air quality in North and Central India saw dangerous levels of particulate matter, South India appeared to have comparatively cleaner air. All 10 of the least polluted cities were in the South and the East: eight in Karnataka and one each in Odisha and Tamil Nadu.
  • Due to the Himalayas and the cooler weather as well as big industrial clusters, the levels of pollution are higher in the North. Southern India has the benefit of the mixing of sea breeze.
  • The report found that fossil fuels were the biggest contributors to the particulate matter

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