The incidents were reported from Najafgarh, Transit Camp, Nehru Place, Mohan Garden in Uttam Nagar and Raj Nagar in Palam.
Two fire tenders each were rushed to the four areas. No casualty or injury was reported in the incidents, the officer said.
The Met department had forecast rain and thunderstorm with gusty winds on Sunday.
Mahesh Palawat, Director of the private weather forecast agency Skymet, told IANS that the change in weather was due to western disturbance which reached Jammu and Kashmir and Himachal Pradesh on Saturday evening.
"A cyclonic circulation formed near Haryana and north Rajasthan along with the western disturbance. South-easterly and easterly winds are creating moisture and high temperature in the region which caused the formation of thunder clouds. The strom blew over a trough which is spread from north Rajasthan and Uttar Pradesh.
"Delhi falls within the trough, but now this will move towards western Uttar Pradesh. There is a likelihood of light rains with thunder towards the afternoon or evening for two more days. Westerly winds will form again and temperature will begin to rise after May 15," Palawat said.