India: Ghaziabad most polluted city in north India: CSE
New Delhi, Dec 16 (PTI) Ghaziabad is the most polluted city in north India and its annual average PM2.5 levels are much worse than those of Delhi, according to data from 137 continuous ambient air quality monitoring stations (CAAQMS) spread across 56 cities in the region.
The Centre for Science and Environment, which analysed the PM2.5 data from these CAAQMS from January 1, 2019, to November 30, 2021, also said PM2.5 levels in otherwise cleaner smaller towns can exceed the concentration reported in Delhi during smog episodes in early winters.