Delhi and its adjoining areas such as Gurugram, Faridabad, Noida and Ghaziabad on Sunday received light rainfall, accompanied by thunder and lightning in some places, in the morning. According to Skymet, Delhi-NCR witnessed rain showers due to the low-pressure area persisting in the central parts of the country. At present, the weather system is over north Madhya Pradesh and its adjoining southwest Uttar Pradesh. According to the weather forecasting agency, Delhi-NCR will receive moderate rainfall on Monday (Sept 16) and Tuesday (Sept 17) due to certain weather activities. It should be noted that due to the rain the quality of air in Delhi has improved to 'satisfactory' level with Air Quality Index docking at 56.