The capital’s air quality improved substantially to “moderate” category on Saturday as the air quality index clocked 161. All thanks to a western disturbance in northwest India that hit Delhi-NCR on Friday evening, cleaning up the air substantially.
from Delhi News, Latest Delhi News Headlines & Live Updates - Times of India https://timesofindia.indiatimes.com/city/delhi/air-quality-improves-before-half-marathon/articleshow/71668939.cms