Delhi

XNew Delhi: After a brief phase of improvement, Delhi’s air quality worsened once again on Thursday, slipping back into the ‘very poor’ category as farm fires intensified across northern states. Data from the Central Pollution Control Board (CPCB) showed the city’s 24-hour average Air Quality Index (AQI) at 311, a

sharp rise from Wednesday’s 202, pushing the national capital into the red zone.

According to CPCB figures, Delhi ranked as the fourth most polluted city in the country, while Rohtak topped the list with an AQI of 348. Of the 38 air quality monitoring stations in the Capital, 32 recorded ‘very poor’ levels, with PM2.5 continuing to be the dominant pollutant.

The Decision Support System (DSS) for air quality forecasting indicated that stubble burning had become a major c

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