Delhi/Ghaziabad, July 10 -- At least four people, including a three-year-old girl, died as heavy rains lashed Delhi-National Capital Region (NCR) on Thursday, submerging several areas under water that inconvenienced pedestrians and resulted in massive snarls on roads. A seven-year-old allegedly drowned in a waterlogged vacant plot in Sanjay Colony in the Samaypur Badli area, northwest Delhi. Police said they were still investigating the details of the death, including the ownership of the plot. According to an officer aware of the details, the boy, a class 3 student, had gone to the plot near his house with his five-year-old brother early in the morning to defecate. "My two sons left home around 8.30am to defecate in the open area. The seven-year-old was sitting on a wall when he slipped and fell into the vacant plot that was submerged with rainwater. It was an accident," his mother, Tamanna, told reporters. The other three deaths were reported fro Ghaziabad. In Sarvodaya Nagar, the body of the three-year-old was found facedown in the water and it is suspected she slipped and drowned in rainwater that had accumulated in the locality, police said. In Indirapuram, a 24-year-old guard, identified as Bablu Kumar, allegedly died after being electrocuted while crossing a park near the private office where he worked. Also, a man's body was recovered from a drain adjacent to Delhi-Saharanpur Road after he allegedly fell. It is suspected that he did not see the drain on the heavily waterlogged road. His identity has yet to be established. Across Delhi-NCR, it rained nearly continuously from late Wednesday night until mid-afternoon on Thursday. Experts said the heavy downpour was caused by a low pressure area reaching Delhi. "It travelled from the Bay of Bengal to western Uttar Pradesh during the early morning hours, bringing rain," said amateur meteorologist Navdeep Dahiya. Meanwhile, the Capital saw its cleanest air in nearly three years on Thursday as rain continued, recording a 24-hour average air quality index (AQI) of 48 in the good category, as per the Central Pollution Control Board (CPCB)'s 4pm bulletin. The city has not recorded a "good" air day since September 10, 2023, when similar overnight rains and strong winds cleared Delhi's air and the city recorded a 24-hour average AQI of 45. On Wednesday, the city recorded an average AQI of 59, its lowest AQI since September 4, 2025, when it was 58. According to CPCB, an AQI between zero and 50 is considered "good," 51 to 100 "satisfactory," 101 to 200 "moderate," 201 to 300 "poor," 301 to 400 "very poor," and 401 to 500 "severe."...