Kolkata residents woke up to a bright and pleasant morning on Thursday, December 18, 2025, with clear skies and a cool breeze setting the stage for a comfortable day. The city's weather presents a dual narrative, offering ideal conditions for outdoor plans but shadowed by a stark warning from the previous day's dangerously polluted air.
Today's Pleasant Weather Outlook
The maximum temperature is expected to reach 27.6°C, while the night will be cooler at a minimum of 16°C. With humidity at a comfortable 44% and gentle winds of up to 12.2 kph, the day is perfect for a stroll or an outdoor gathering. The skies will remain clear with no chance of rain, making the evening along the Hooghly River particularly inviting.
The Severe Air Quality Hangover
Contrasting sharply with the nice weather is the alarming air quality data from Wednesday. The city's Air Quality Index (AQI) hit 345, firmly placing it in the 'Severe' category. The air was laden with harmful pollutants, including PM2.5 at 185 µg/m³ and PM10 at 233 µg/m³. Carbon Monoxide levels were also significantly high at 572 µg/m³.
This level of pollution poses serious health risks, especially for those with respiratory conditions like asthma. While today's sunshine may help disperse some pollutants, the lingering effects necessitate caution.
Daily Recommendations and Weekly Forecast
Authorities and health experts recommend that citizens carry masks, especially in traffic-heavy zones, and wear sunglasses for the bright sun. Morning walks are encouraged in the crisp air, and staying hydrated is key for those spending time outside.
Looking ahead, the week promises consistently sunny weather with a gradual warming trend. The forecast is as follows:
- December 19: High of 28.2°C
- December 20: High of 28.3°C
- December 21: High of 28.7°C
- December 22 & 23: Warmer, with highs of 29.1°C and 29.5°C
- December 24: The week ends with a high near 29.8°C
Nights will remain cool, with lows between 16°C and 18.6°C. The consistent sunshine could aid in improving the air quality in Kolkata by helping disperse atmospheric pollutants. Days like December 21 and 22 are highlighted as especially promising for outdoor activities.
The severe AQI reading serves as a stark reminder of the city's ongoing pollution challenges. Residents are advised to enjoy the pleasant winter weather while remaining vigilant, monitoring daily AQI updates, and taking necessary precautions for their health when air quality dips.
