By News Karnataka
Copyright newskarnataka
Bengaluru: Residents woke up to a cool and damp morning on Thursday, September 18, 2025, with the city reeling under heavy rainfall that caused severe waterlogging across several areas. While the downpour led to traffic snarls and flooding in low-lying zones, the city simultaneously enjoyed one of its cleanest air days of the month. Data from AQI.in confirmed that Bengaluru’s Air Quality Index (AQI-IN) stood at 46 on Wednesday, placing the city firmly in the “good” category.
Rain brings relief and chaos
The India Meteorological Department (IMD) forecast moderate to heavy showers throughout the day, with the heaviest spells expected in the afternoon. By morning, several arterial roads and underpasses were already inundated, leading to long traffic jams and stranded vehicles. Commuters struggled with reduced visibility, forcing many to resort to public transport or stay indoors.
According to official readings, the temperature on September 18 ranged between 20.1°C and 25.9°C. The day was characterised by high humidity at 83 per cent and moderate winds at 21.2 kilometres per hour. The city also reported a 95 per cent chance of precipitation, with rainfall totalling 7.63 mm by mid-morning.
Air quality improves significantly
Despite the chaos on the roads, Bengaluru residents found a silver lining in the form of cleaner air. Wednesday’s AQI-IN reading of 46 was the lowest of the month so far, thanks to the cleansing effect of consistent rainfall.
Pollution measurements showed PM2.5 levels at 15 µg/m³ and PM10 at 46 µg/m³. Carbon monoxide was recorded at 407 µg/m³, all of which were well within safe limits. Experts noted that continued rainfall would further wash out pollutants and maintain good air quality in the coming days.
Safety and precautions for residents
Authorities have urged people to carry umbrellas and raincoats while stepping out. Motorists are advised to drive carefully, as heavy showers reduce visibility and increase the risk of skidding on waterlogged roads.
While air quality remains categorised as “good”, health officials recommend that those travelling through high-traffic areas continue wearing masks to limit exposure to vehicle emissions. Emergency teams have been placed on alert to address flooding, particularly in low-lying residential pockets.
Political reactions to flooding
The city’s flooding has sparked political blame games, with opposition leaders in the Bharatiya Janata Party (BJP) criticising the Congress-led state government for inadequate stormwater drainage management. BJP representatives accused the government of failing to implement long-term infrastructure solutions, while the ruling party defended its measures, citing unprecedented rainfall intensity.
Weekly weather forecast
Looking ahead, Bengaluru is expected to remain under wet conditions for the next several days.
September 19: Patchy rain, temperatures between 18.7°C and 26.7°C
Meteorologists suggest that September 19 and 23 will be the best opportunities for outdoor activities, though weather conditions may change quickly.
Bengaluru’s September 18th weather brought both relief and disruption. While the city celebrated its cleanest air of the month, incessant rainfall left roads waterlogged and residents struggling with daily commutes. With forecasts predicting more showers ahead, citizens are urged to remain cautious and plan travel accordingly. The combination of cleaner air and persistent dampness paints a mixed picture for the city in the coming week.
