Bengaluru: Residents of Bengaluru woke up to a cool and rainy Saturday on October 18, 2025, as showers swept across the city through the morning hours. According to AQI.in, the temperature ranged between 21°C and 26.9°C, accompanied by moderate rainfall and high humidity levels throughout the day. The city’s air quality index (AQI) stood at 55 yesterday, placing it in the moderate category, with further improvement expected due to ongoing precipitation.

Cloudy morning, steady rain through the afternoon

Bengaluru began the day under cloudy skies and a cool breeze, creating a pleasant early-morning atmosphere for residents. Meteorological data indicated humidity at 83% and wind speeds reaching up to 14.8 km/h.
Rain intensity is forecast to increase towards the late afternoon, with a 90% chance of precipitation. The evening temperature is likely to dip to 21°C, accompanied by a gentle breeze after 9 PM.

The Indian Meteorological Department (IMD) has advised commuters to prepare for intermittent showers during the evening rush hours. Motorists are urged to drive carefully on waterlogged roads, particularly in low-lying areas such as Koramangala, Indiranagar, and Silk Board Junction, which often experience slow-moving traffic during rainy spells.

Air quality shows steady improvement

Yesterday’s air quality readings from AQI.in recorded an AQI-IN of 55 and AQI-US of 71, with PM2.5 levels at 19 µg/m³ and PM10 at 54 µg/m³. Carbon monoxide (CO) concentrations reached 484 µg/m³, a level that may mildly impact individuals with respiratory sensitivities.

The ongoing rain has helped reduce particulate pollution, making this one of the cleanest air quality days in Bengaluru this month. Experts note that precipitation helps wash away airborne pollutants, improving breathing conditions across the city. However, mask usage remains advisable in high-traffic zones where localised emissions can persist despite the rain.

Rainy conditions favour indoor plans

Given the consistent rainfall, residents are encouraged to prioritise indoor activities. Those heading outdoors should carry rain gear, particularly during the afternoon and evening when showers are expected to peak.
The combination of moderate temperatures and rain has created comfortable conditions, though humidity continues to remain high.

Wind speeds have remained stable, aiding in the even distribution of rainfall and gradual dispersion of residual pollutants. This has contributed to a noticeable freshness in the city’s air, a welcome change after weeks of fluctuating AQI readings earlier in October.

Week-ahead weather outlook

The upcoming week’s forecast predicts continued rainfall patterns across Bengaluru.

  • Sunday (Oct 19): Heavy rain expected with temperatures between 20.3°C and 25.9°C.
  • Monday–Wednesday: Persistent heavy showers likely to continue.
  • Thursday: Rain intensity to reduce to moderate levels, offering a brief respite and potentially the most favourable day for outdoor activities.
  • Weekend: Patchy rainfall to return, with high humidity persisting.

Meteorologists suggest that the consistent rainfall may further improve air quality across the city, although occasional traffic slowdowns and waterlogging may persist in certain areas.

Monsoon pattern typical for October

The current weather represents a typical October monsoon pattern for Bengaluru — steady showers, cool temperatures, and dense cloud cover. The prevailing conditions have been credited with enhancing the city’s greenery and maintaining moderate air quality compared to drier periods.

Residents planning weekend activities are advised to stay updated on real-time weather and AQI reports through official platforms, including AQI.in and the IMD Bengaluru centre.