Overnight rain cools Delhi-NCR and improves Delhi's AQI to 76. IMD forecasts more showers on Friday and clearer skies from November 1. Primary Menu HomeNews from StatesDelhi-NCR Rain Brings Chilly Weather, AQI Improves to 76 Overnight rainfall brought cooler weather to Delhi-NCR on Friday and improved air quality, with Delhi’s overall Air Quality Index (AQI) falling to 76, in the satisfactory category.