The national capital’s Air Quality Index (AQI) remained in the ‘Very Poor’ category for the ninth straight day. As per the Centre-run System of Air Quality and Weather Forecasting And Research (SAFAR), Delhi’s AQI stood at 352. On Sunday, Delhi’s overall AQI at around 6 AM was recorded at 347.
The concentrations of PM 2.5 and PM 10 stood at 188 in the ‘very poor’ and 301 in the ‘poor’ category respectively.
According to the SAFAR bulletin, the per cent share of stubble burning related pollutants to Delhi’s PM2.5 may remain low in spite of high wind speeds.
“The AQI today indicates very poor air quality. Transport level winds are likely to become strong from tonight till 23rd noon and coming from the favourable northwest direction. As farm fire counts are reducing rapidly, the per cent share of stubble burning related pollutants to Delhi’s PM2.5 may remain low in spite of high wind speeds. Relatively high surface winds and moderate mixing layer height results in efficient ventilation of near-surface pollutants. The net effect of a drastic reduction in fire counts and increase of surface wind speed tends to improve the air quality to the lower end of ‘very poor’ category for the next 2 days,” it said in a bulletin.
An AQI between zero and 50 is considered “good”, 51 and 100 “satisfactory”, 101 and 200 “moderate”, 201 and 300 “poor”, 301 and 400 “very poor”, and 401 and 500 “severe”.
Meanwhile, with an aim to curb air pollution, the Arvind Kejriwal-led Delhi government on Sunday (November 21, 2021) extended the ban on the entry of trucks carrying non-essential items into the national capital and work from home for its employees till November 26.
“The government offices shall remain closed till 26 November 2021 except those involved in essential services. The private offices are advised to allow their staff to work from home till 26 November 2021,” read the order issued by the Delhi government.
(With inputs from ANI)