Kolkata Heavy Rain and Humidity: Kolkata is experiencing another bout of heavy rainfall accompanied by uncomfortably high humidity, a combination that has left citizens grappling with disrupted routines, sticky discomfort, and health concerns. The October monsoon-like conditions, powered by a depression over the Bay of Bengal, have intensified showers across the city while keeping humidity levels persistently above 85–90%. Although the rain has provided a temporary cleansing effect on pollution, air quality remains in the moderate category, requiring caution for sensitive groups.
As festivals approach and daily activities continue, this mix of rain, humidity, and air quality issues is shaping how the city functions.
Meteorological Overview: Why Kolkata Is Receiving Heavy Rain
According to the India Meteorological Department (IMD), a depression system has been drawing moisture from the Bay of Bengal, triggering widespread rain in southern Bengal. Kolkata is experiencing both steady drizzle and sharp downpours, with localized waterlogging already reported in areas like Behala, Tollygunge, and central business districts.
Temperatures are hovering around 26–27°C, but the “feels-like” temperature is several degrees higher due to oppressive humidity. The city’s dense urban layout is also amplifying the heat-trap effect, known as the urban heat island phenomenon, making indoor and outdoor life equally uncomfortable.
For detailed IMD weather bulletins, visit the India Meteorological Department official portal.
Humidity’s Grip: How It Impacts Residents
High humidity prevents sweat from evaporating, impairing the body’s natural cooling mechanism. This results in fatigue, irritation, and even health issues like dehydration or heat exhaustion. Kolkata residents are reporting:
- Persistent stickiness and dampness in clothes and bedding.
- Mold growth in households due to prolonged indoor moisture.
- Increased discomfort during commutes, especially in overcrowded buses and trains.
Doctors advise residents to remain hydrated, wear breathable cotton fabrics, and minimize outdoor activity during peak humid hours.
Air Quality: Moderate But Fluctuating
Despite the rainfall, air quality data from IQAir shows Kolkata’s AQI hovering around 55–60, placing it in the moderate range. This means that while the air is relatively safe for most citizens, those with asthma, bronchitis, or heart conditions may experience irritation or breathing discomfort.
Key pollutant levels:
- PM2.5: ~12 µg/m³
- PM10: ~15 µg/m³
The rainfall is helping to suppress dust and pollutants, but once showers ease, Kolkata is likely to face another spike in suspended particulate matter. Monitoring real-time updates is essential, especially during festival days when firecrackers and traffic congestion worsen pollution.
For continuous updates, residents can track live data on the Central Pollution Control Board (CPCB).
Kolkata Heavy Rain and Humidity: Daily Life Disruptions in Kolkata
The weather is affecting multiple aspects of city life:
- Transport: Waterlogging is slowing down road traffic, while metro and rail services are experiencing crowd surges as people avoid flooded roads.
- Business and Markets: Street vendors are struggling with fewer customers, while shopkeepers in Burrabazar and Gariahat are taking precautions to prevent stock damage.
- Education: Several schools have issued advisories for parents to ensure children carry rain protection and drinking water.
- Festive Preparations: With Durga Puja around the corner, pandal workers are racing against time to waterproof structures and electrical wiring.
Health Concerns and Precautions
Health Risks
- Dehydration and fatigue due to high humidity.
- Fungal infections from damp clothes and shoes.
- Respiratory irritation in sensitive individuals from fluctuating AQI.
Recommended Precautions
- Drink sufficient fluids; avoid carbonated drinks.
- Use light, cotton-based attire.
- Carry umbrellas and waterproof footwear.
- Use face masks if sensitive to air quality fluctuations.
- Ensure indoor ventilation and, where possible, use air purifiers.
Climate Context: A Bigger Pattern
Experts note that the Bay of Bengal has been increasingly prone to rapid cyclonic formations and depressions, largely due to climate change. Warmer sea-surface temperatures are intensifying rainfall systems, making cities like Kolkata more vulnerable to flash floods, long humidity spells, and erratic air quality.
Studies from IPCC emphasize that South Asian cities are entering a future where monsoon irregularities and climate volatility will shape daily weather far more than before.
Looking Ahead: Forecast for Coming Days
The IMD predicts that rain and humidity will continue for the next 3–4 days, with the heaviest showers expected on Dashami, coinciding with Durga Puja’s concluding rituals. While this may dampen pandal visits and immersions, it may also help keep pollution under control during festivities.
Authorities have already urged citizens to stay updated through the West Bengal Disaster Management Department and take necessary precautions for mobility and safety.
Conclusion: Balancing Rain, Humidity & Air Quality in Kolkata
Kolkata stands at the crossroads of seasonal monsoonal systems, high humidity, and fluctuating pollution. While the rains bring some relief from scorching heat and temporarily improve air quality, the humidity poses daily discomfort and health risks.
As festivals draw near, residents are navigating how to balance celebrations with practical challenges like rain preparedness and air quality monitoring. Civic authorities, too, are under pressure to maintain effective drainage, ensure public safety, and minimize disruption during this peak festive season.
Kolkata’s weather today serves as both a reminder of climate challenges and a call to adapt through awareness, health-consciousness, and preparedness.
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