Kolkata weather today: Sunny skies amidst severe air pollution concerns
Times of India | 3 December 2025
Kolkata is experiencing a sunny start to December 2025, offering pleasant temperatures, yet significant air quality concerns persist. Yesterday's air quality index (AQI-IN) reached 337, classified as 'Severe', prompting advisories for residents, particularly sensitive groups, to take precautions despite the clear weather. The week ahead promises consistent sunny conditions, but the city's ongoing battle with pollution, especially during the winter months, remains a notable issue.
Today, December 3, 2025, Kolkata is set for a bright and sunny day with no chances of rain. The weather is expected to remain clear throughout the day. Temperatures are forecast to range from a cool 17.7°C in the morning to a warm afternoon peak of 28.7°C.
The day’s average temperature is anticipated to hover around 22.7°C. Humidity levels will remain moderate at 35%, contributing to a relatively comfortable feel despite the heat. Winds will be gentle, reaching up to 13.7 km/h, ensuring a light breeze throughout the day.
The evening hours will see temperatures gradually cool off. This gradual cooling is expected to make the evening ideal for outdoor strolls or casual gatherings. However, sensitive individuals should stay cautious as the dry air and pollutants might cause discomfort.
Yesterday, Kolkata’s air quality was alarmingly poor. The AQI-IN was recorded at 337.
This level placed the air quality into the 'Severe' category.
The primary pollutants identified were PM2.5 at 179 µg/m³ and PM10 at 228 µg/m³. Both these levels were significantly above safe limits.
High levels of carbon monoxide (CO) at 540 µg/m³ added to the city’s unhealthy air quality.
Such conditions can cause breathing difficulties, eye irritation, and aggravate pre-existing respiratory conditions. While today’s clear weather might help disperse some pollutants, the lack of wind and rain could keep the air quality in the 'Poor' to 'Very Poor' range.
Given the sunny weather, it is considered a great day for outdoor activities like picnics or cycling. However, residents are advised to be mindful of the lingering pollution. Sensitive groups, including children, the elderly, and those with respiratory issues, should limit their outdoor exposure or wear masks.
Keeping hydrated is recommended, and wearing sunglasses is advisable to protect against the afternoon glare. If planning an evening outing, the cooler temperatures will make it pleasant. It is suggested to avoid areas with heavy traffic to minimize pollution exposure.
The coming week promises consistent sunny weather with no significant changes in temperature.
On December 4, the forecast indicates a sunny day with a high of 28.1°C and a low of 16.3°C.
Clear skies are expected on December 5, with temperatures ranging from 16.8°C to 28.4°C.
December 6 is predicted to be slightly cooler, with a high of 27.6°C and a low of 15.7°C.
A sunny and pleasant day is anticipated on December 7, with a maximum temperature of 27.5°C and a minimum of 15.4°C.
December 8 is expected to be partly cloudy, with temperatures between 15.8°C and 27.2°C.
The entire week is considered ideal for outdoor plans. Early mornings and evenings will be the most comfortable times to step out. Residents are encouraged to keep an eye on the air quality index (AQI) updates, as stagnant air conditions might worsen pollution levels.
With yesterday’s AQI-IN at 337, Kolkata recorded one of its worst air quality days in recent weeks. This serves as a reminder of the city’s ongoing battle with pollution, especially during the winter months when atmospheric conditions trap pollutants closer to the ground.
Data referenced in this article is taken from AQI.in.