Delhi air pollution in early winter down 20% compared to pre-Covid: Report

The report also states that the onset of winter has been much cleaner this year due to the rains which were witnessed in September and October

The Centre for Science and Environment (CSE) on Thursday said the air pollution in Delhi this winter has seen a significant decline of 20 per cent, compared to the pre-Covid era. The report comes at a time when the national capital has been marking poor on the Air Quality Index (AQI) for a week. 

Fine particulate matter or PM2.5 is an air pollutant that becomes a cause of concern for people's health when its levels in air are high. PM2.5 are tiny particles in the air which reduces visibility and causing the air to appear hazy when levels are elevated.