New Delhi: Delhi saw a third straight week of clean air, as the 21-day lockdown continued to reduce pollutants from industries, along with air and road traffic pollution. On Sunday, the overall Air Quality Index in Delhi stood at 82, which falls under the 'satisfactory' category, per the System of Air Quality and Weather Forecasting and Research.

The weekend before this saw the best air quality in the national capital region (NCR) in 2020, with an average AQI of 46. The weekend before that, it was at 159. The harmful PM10 and PM2.5 levels were down by 35-40% in Delhi.