Hajipur Records Bihar’s Highest Diwali AQI at 340, Noise Pollution Also Exceeds Safe Limits

Patna: On Diwali night, while Patna’s air quality saw some improvement compared to last year, the sound of firecrackers added to the discomfort. In certain parts of the city, PM2.5 levels were recorded higher than usual.

However, despite the spike, air pollution levels in Patna did not reach dangerous thresholds and were significantly lower than last year. In 2023, the Air Quality Index (AQI) in Patna on Diwali night was 333, whereas this year, it stood at 230.

Dr. D.K. Shukla, Chairman of the Bihar State Pollution Control Board, attributed the reduction in air pollution to stricter administrative measures and increased public awareness. “The administration worked on multiple levels to control air pollution. Regular water sprinkling on roads had a positive effect, and awareness programs in schools and colleges also played a role,” said Dr. Shukla.

Experts noted that wind conditions this year helped prevent severe pollution. Wind speeds of 5 to 7 kilometers per hour on Diwali night dispersed smoke and pollution particles. Additionally, lower atmospheric humidity aided in dispersing dust.

The highest air pollution level in the state was recorded in Hajipur, with an AQI of 340. According to Dr. Shukla, ongoing highway construction in the area contributed significantly to this spike, rather than firecrackers. “We have instructed the construction agency to take action to control the pollution. If they fail to comply, the board will take appropriate measures,” he added.

In Patna, air pollution levels increased on Diwali night compared to normal days, with PM10 levels rising notably. Data collected at four locations in the city showed a marked increase. At the Bihar State Pollution Control Board office, AQI rose from 54 on the day before Diwali to 188 on Diwali night. Similarly, near Beltron Bhawan, PM10 levels jumped from 64 to 110, while the AQI near the Boring Road crossing climbed from 49 to 172. At Ashok Raj Path, the AQI increased from 97 to 186.

Noise pollution also surged in the city, with the highest levels recorded near Beltron Bhawan, a designated peaceful area. Noise levels here reached 70.7 decibels between 10 pm and 11 pm, far exceeding the safe limit. Earlier in the evening, the noise level was 56 decibels, rising to 69.6 decibels late at night, posing serious health risks.