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HomeHealthAQI in Delhi, Noida falls to severe zone, may improve tomorrow but...

AQI in Delhi, Noida falls to severe zone, may improve tomorrow but will remain in same category

Air quality: Sunday saw the overall air quality level in Delhi and Noida once again deteriorating to the ‘severe category’, mainly due to adverse atmospheric conditions. The Air Quality Index (AQI) in Delhi measured around 400 while the AQI in Noida dropped to 430 as against 375 yesterday. In Gurugram, however, the AQI measured 316, falling in the ‘very poor’ category.

“Due to low wind speed and decrease in mixing layer height, the air quality is deteriorating in Delhi. Today the air quality has come to the severe category with AQI around 400. We will see an improvement in AQI from evening onwards,” a scientist at the Air Quality Division of India Meteorological Centre, Vijay Soni, said.

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Sharp decline in AQI

The AQI level witnessed a sharp decline on Sunday. Around 7 am in the morning, the AQI in Delhi was measured at 340, according to the System of Air Quality and Weather Forecasting And Research (SAFAR). The AQI yesterday evening was at 370.

All major monitoring stations showed a significant dip in AQI. In Pusa, the AQI was 353 while the Delhi University area recorded it at 410. The index in the Airport region touched 370 and for Mathura Road, it was 412. Lodhi Road and IIT Deli also were in the ‘very poor’ category at AQI 326 and 322 respectively. AQI was in ‘poor’ zone in Ayanagar too at 324 at 10 am on Sunday.

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Will remain in same category tomorrow

Experts said the pollution level is likely to worsen on Sunday and will start improving from December 5 onwards. “The AQI is likely to remain in the very poor category on December 4. It may improve but remain in the same category on December 5. The air quality is likely to improve further and reach the lower end of the very poor category on December 6. In the subsequent six days, the AQI is likely to remain largely in the very poor or poor category,” air quality experts said in an early warning bulletin.

The AQI from 0 to 100 is considered as good, while from 100 to 200 it is moderate, from 200 to 300 it is poor, and from 300 to 400 it is said to be very poor and from 400 to 500 or above it is considered as severe.

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