Kolkata’s diwali pollution matches Delhi as firecrackers push AQI to hazardous levels

Kolkata's air quality plunged to critical levels during Diwali celebrations, with the city experiencing an unprecedented rise in pollution that rivaled the already hazardous conditions in Delhi. According to the Central Pollution Control Board (CPCB), the air quality index (AQI) in several areas of Kolkata reached alarming figures, particularly Ballygunge, which recorded an AQI of 488 by 11 p.m., indicating severe air pollution.

As the festivities began, Kolkata's atmosphere was saturated with smoke and particulate matter from the numerous firecrackers set off throughout the night. Data collected at various points revealed concerning AQI levels: Rabindra Sarobar saw readings of 190 at 10:45 p.m., while Fort William and Victoria Memorial recorded AQIs of 183 and 182, respectively. Bidhan Nagar also faced severe pollution, with the AQI rising to 182. The CPCB data indicated a notable increase in pollution levels across the city as the night progressed, leading to widespread health advisories for residents.

In comparison, Delhi’s pollution levels remained alarmingly high, as the city is known for its struggle with air quality, particularly during the festival season. On Diwali night, Anand Vihar, ITO, and the Airport area recorded AQI levels reaching the maximum of 500, categorizing the air as hazardous. The Rohini area had slightly better air quality, with an AQI of 485. However, Kolkata's near-matching levels, especially in Ballygunge, underscore a troubling trend of increasing pollution that affected both cities simultaneously.

The impact of pollution was felt throughout Kolkata, with additional areas showing significant AQI levels. Jadavpur registered an AQI of 227, while regions like Dhakuria and Chetla reported levels of 164 and 178, respectively. Other areas, including Tangra and Kuliya, also saw concerning readings of 163 and 165. As the night continued, residential and high-traffic areas bore the brunt of the deteriorating air quality, prompting health concerns among residents, particularly those with pre-existing respiratory conditions.

The rise in PM 2.5 levels—a critical factor contributing to poor air quality—was notably severe. The CPCB reported that both Kolkata and Delhi faced spikes in PM 2.5 levels, with air quality deteriorating significantly due to the use of firecrackers. This situation reinforces the urgent need for stricter regulations on firecracker usage during festivals, as both cities grapple with the consequences of pollution on public health and environmental quality.