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Kolkata, Oct 19 (PTI) A day before Kali Puja, Kolkata’s air quality hovered between ‘unhealthy’ and ‘poor’ range on Sunday, with the Air Quality Index (AQI) for PM2.5 reaching 238 at one monitoring station in the evening, causing alarm among environmentalists.

Some locations recorded ‘moderate’ levels (AQI above 178), while others remained in the ‘unhealthy’ range (AQI between 101-150), an official of West Bengal Pollution Control Board said.

At Victoria Memorial. the AQI read at 238 at 8 pm (poor). Other readings included: 155 at Ballygunge, 158 at Chetla, 186 at Jadavpur, and 171 at Manicktala — all classified as “moderate" though these translate to “extremely unhealthy" under environmental norms..

It was 105 at Bidhannagar, 134 at Fort William and 149 in the

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