<a href="https://www.mid-day.com/news/india-news/article/delhi-air-quality-improves-slightly-aqi-now-in-poor-category-23601059" target="_blank" rel="none noopener">Delhi's air quality</a> remained 'very poor' on Sunday as slow wind speed reduced dispersion of pollutants over the city, according to the Central Pollution Control Board (CPCB).
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.
A ventilation index lower than 6,000 m&sup2;/s and average wind speed less than 10 kmph are considered unfavourable for the dispersal of pollutants, it stated.
According to the AQEWS, the <a href="https://www.mid-day.com/news/india-news/article/delhis-air-quality-turns-very-poor-as-haze-fog-envelop-city-visibility-drops-23600886" target="_blank" rel="none noopener">air quality</a> 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.
An AQI between 0 and 50 is considered 'good', 51 to 100 'satisfactory', 101 to 200 'moderate', 201 to 300 'poor', 301 to 400 'very poor' and 401 to 500 'severe'.
Delhi recorded a minimum temperature of 16.8 degrees Celsius, 1.5 notches above the season's average, according to the India Meteorological Department (IMD).
Humidity was recorded at 79 per cent at 8:30 am.
The IMD has forecast mainly clear skies during the day and shallow fog during the night. The <a href="https://www.mid-day.com/news/india-news/article/delhis-air-quality-improves-slightly-but-remains-in-poor-category-23600738" target="_blank" rel="none noopener">maximum temperature</a> is likely to settle around 31 degrees Celsius.
Authorities have deployed truck-mounted water sprinklers and other dust control measures across several parts of the city to mitigate the rising pollution levels.
To control the deteriorating air quality in Delhi-NCR, the Commission for Air Quality Management (CAQM) has banned the entry of all BS-III and below standard commercial goods vehicles that are not registered in Delhi from November 1.
Since Diwali, the Air Quality Index (AQI) in Delhi and the <a href="https://www.mid-day.com/news/india-news/article/delhi-air-pollution-crisis-low-moisture-in-clouds-prevented-rain-despite-cloud-seeding-says-iit-kanpur-director-23600811" target="_blank" rel="none noopener">National Capital Region</a> (NCR) has been reeling under the 'poor' and 'very poor' categories in several areas, even as Stage 2 of the Graded Response Action Plan (GRAP) remains in effect.
The New Delhi Municipal Council (NDMC) has already announced the doubling of parking fees across the national capital after the Graded Response Action Plan (GRAP) Stage II was invoked due to deteriorating air quality.
The decision, aimed at discouraging the use of private vehicles, will see parking charges double for off-road and indoor parking areas managed by the<a href="https://www.mid-day.com/news/india-news/article/delhi-wakes-up-to-haze-air-quality-stays-in-very-poor-category-23600566" target="_blank" rel="none noopener"> NDMC</a>.
(With inputs from Agencies)

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

Slow wind speed keeps Delhi’s air quality in ‘very poor’ category

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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

Delhi's air quality 'very poor', slow wind speed reduces dispersion of pollutants

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