PM2.5 pollution in Delhi during July-Sept quarter 2nd lowest in 5 years: CSE

Updated: Oct 21 2022 1:12PM

New Delhi, Oct 21 (PTI) Delhi's PM2.5 pollution average for the July-August-September quarter this year stood at 37 microgram per cubic metre, only marginally higher than the five-year low of 36 microgram per cubic metre recorded during 2020, according to an analysis by the Centre for Science and Environment (CSE).

Pollution levels in the July-August-September quarter were preceded by one of the most polluted summers this year, unlike in 2020 when the trimester followed the cleanest ever summer (March-May) due to extraordinary conditions created because of hard pandemic lockdowns, the green think tank said.

"Therefore, it is important to understand what aided in cleaning up the Delhi air. Looking at the rainfall data it becomes evident that distribution of rainfall has a relatively higher impact on seasonal air quality than the absolute quantity of rainfall," it said.