Delhi Air Quality Improves to ‘Moderate’ – Best Since 2015
An increased wind speed and an overnight drizzle brought relief to the capital on Thursday, as Delhi witnessed its first December day with moderate air quality since 2015, the Central Pollution Board Data records say.
From 23 November to 5 December, the air quality in the city had remained 'very poor', with toxic smog disrupting normal life and even the India-Sri Lanka Test match at the Feroz Shah Kotla Stadium.
According to the Central Control Room for Air Quality Management of the CPCB, the concentration of nitrogen dioxide (NO2) breached the 24-hour safe limit of 80 micrograms per cubic metre (ug/m3) in areas such as RK Puram (139.27), Anand Vihar (104.27) and Dilshad Garden (85.20) in the evening.
As per a Hindustan Times report, areas around Pusa Road had the best air on 7 December, with a moderate AQI of 119. Areas close to the Indira Gandhi International Airport, Lodhi Road, Shadipur, Burari Crossing, and Dilshad Gardens, also had similarly better air.
The report further stated that air cleared further as wind speed increased from around 8-10 kmph to 12-14 kmph from Wednesday to Thursday respectively. The humidity levels also fell down to 60 percent from 70 percent during the span of a day.
Though the Air Quality Index (AQI) improved from 'poor' on 7 December, a toxic haze continued to envelope parts of Delhi with the atmosphere being laden with NO2 and other pollutants.
The match ended in a draw yesterday with Chandimal admitting that it was tough playing under pollution. Some of the Sri Lankan players had fallen sick.
Air quality is improving every hour and we hope it will continue to improve. Now the wind is blowing very easily from north to south with a speed of 4.5 m/s, which has resulted in dispersion of pollutants, leading to improvement in the air quality after a long pause.Dipankar Saha, Air Lab Chief, Central Pollution Control Board (CPCB)
The United Nations on 5 December marked the first International Smog Day.
Pollution is considered severe plus when readings of PM2.5 and PM10 cross 300 and 500 ug/m3, respectively. The corresponding prescribed standards are 60 and 100.
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