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In Photos: Delhi’s air turns toxic as AQI hits 421, enters ‘severe’ category

Updated On: 02 November, 2025 03:05 PM IST | ronak mastakar

Delhi's air quality remained 'very poor' on Sunday as slow wind speed reduced dispersion of pollutants over the city, according to the Central Pollution Control Board (CPCB). (Pics/PTI)

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The national capital's Air Quality Index (AQI) stood at 386 in the morning, a considerable rise from 303 on Saturday, CPCB data showed.

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The national capital's Air Quality Index (AQI) stood at 386 in the morning, a considerable rise from 303 on Saturday, CPCB data showed.

The Air Quality Early Warning System (AQEWS) for Delhi said wind speed dropped below 8 kmph from the northwest direction during the evening and night, reducing the dispersion of pollutants.

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The Air Quality Early Warning System (AQEWS) for Delhi said wind speed dropped below 8 kmph from the northwest direction during the evening and night, reducing the dispersion of pollutants.

A ventilation index lower than 6,000 m²/s and average wind speed less than 10 kmph are considered unfavourable for the dispersal of pollutants, it stated.

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A ventilation index lower than 6,000 m²/s and average wind speed less than 10 kmph are considered unfavourable for the dispersal of pollutants, it stated.

According to the AQEWS, the air quality is likely to remain in the 'very poor' category till November 4.

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According to the AQEWS, the air quality is likely to remain in the 'very poor' category till November 4.

Seventeen monitoring stations recorded 'severe' air quality with readings above 400. Wazirpur recorded the highest AQI at 439. Twenty other stations reported 'very poor' air quality with readings above 300, the CPCB's Sameer app showed.

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Seventeen monitoring stations recorded 'severe' air quality with readings above 400. Wazirpur recorded the highest AQI at 439. Twenty other stations reported 'very poor' air quality with readings above 300, the CPCB's Sameer app showed.

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