Delhi saw the highest single-day rainfall in September in at least 12 years, with weather stations in the city recording 112.1 mm rainfall in 24 hours ending at 8:30 am on Wednesday. The heavy burst of rain submerged low-lying areas in knee-deep water and affected traffic movement in parts of the city. On an average, the capital gauges 125.1 mm precipitation in September every year, according to the India Meteorological Department (IMD). This means that Delhi recorded 90 percent of the monthly quota of rain on the first day of the month. Let us take a look at some of the images: 
Vehicles ply on the waterlogged Bahadur Shah Zafar Marg after heavy rain at ITO in New Delhi. (PTI Photo) 
A flooded underpass after heavy rains, in New Delhi. (PTI Photo) -
The Delhi Traffic Police issued an advisory against traffic obstruction at the Azad Market Subway going towards Pratap Nagar due to the heavy waterlogging at the road. (PTI Photo)
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Weather experts said such spells of rain do not help recharge groundwater and lead to flooding in low-lying areas. (Reuters Photo)
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Mahesh Palawat, Vice President, Skymet Weather, a private forecasting agency, said the monsoon pattern is changing due to climate change. (PTI Photo)
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The rain washes away pollutants, but since the number of rainy days has reduced, the average annual air quality is also getting affected. (Reuters Photo)
Children play on a flooded street after heavy rains in New Delhi. (Reuters Photo) 
A man helps to lift a scooter of a man, as he fell at a waterlogged street after heavy rains in New Delhi. (Reuters Photo)
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