New Delhi, Oct 30 (PTI) A blanket of haze and fog enveloped Delhi on Thursday morning, trapping pollutants and pushing the city’s air quality into the “very poor" category after remaining “poor" for the past few days.

According to the Central Pollution Control Board (CPCB), the national capital recorded an Air Quality Index (AQI) of 357, compared to 279 a day earlier.

The dip in air quality was accompanied by reduced visibility across several parts of the city, as fog and calm winds trapped pollutants close to the ground.

The Air Quality Early Warning System for Delhi stated that the city’s ventilation index — which indicates the atmosphere’s ability to disperse pollutants — remained below the favourable level of 6,000 m²/s.

Weak winds of less than 10 kmph and thick fog have prevented

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