In Delhi, the daily average air quality from January to September this year has registered its best index as compared to the corresponding period during the last six years barring 2020. The daily average Air Quality Index for the national capital in the nine months of this year has been recorded at 167 as against 184 in 2022, 180 in 2021, 188 in 2019, and 193 in 2018 during the corresponding periods. Delhi also witnessed the highest number of days with Good to Moderate air quality from January to September 2023 as compared to the corresponding period for the last five years barring the COVID-19 affected 2020.