After Delhi Lieutenant Governor Anil Baijal ordered the stopping of construction in and around the city for three days, Union Environment Minister Harsh Vardhan directed agencies to be on “maximum” alert and take all measures to contain sources of dust as Delhi’s air quality remained “severe”.
Referring to an India Meteorological Department (IMD) data, the ministry said the dusty condition will remain at least till Saturday.
It said the Task Force under the Graded Response Action Plan (GRAP) met with the Central Pollution Control Board (CPCB) and recommended that construction activity-related enforcement measures under the Graded Response Action Plan (GRAP) be brought into operation immediately.
The ministry said air quality of Delhi and NCR, which worsened on June 12-13 due to the incoming dust from Rajasthan, has shown a slight improvement today, with PM10 declining to 759 g/m3 at 4 pm from a peak of 823 g/m3 at 5 pm on Thursday.
“In view of the seriousness of the situation, Union Environment Minister Harsh Vardhan has directed agencies concerned to be on maximum alert and to ensure all necessary measures to contain sources of dust and to check garbage burning.
“He also appealed to the people to avoid unnecessary exposure, given the prevailing situation,” an official statement said.
Delhi’s air quality remained severe for the third day as per the reading on Thursday, prompting authorities to issue warning to people to avoid staying outdoors for long and suspend construction activities, according to the Central Pollution Control Board (CPCB).
The 24-hour average concentration (rolling) of PM10 was 1,400 microgramme per cubic metre (ug/m3), more than three times above the severe level, said Gufran Beig, a scientist at the Centre-run System of Air Quality and Weather Forecasting and Research institute (SAFAR).
The severe level begins at 430 ug/m3.
According to the CPCB, the air quality index (AQI) – a measurement of the concentration of toxic particulate matter in the air – at several places in Delhi remained over 500.
The PM10 level (presence of particles with diameter less than 10mm) was at 756 in Delhi-NCR and 785 in Delhi, leading to hazy conditions.
The PM2.5 level (presence of particles with diameter less than 2.5 mm) worsened and became severe from very poor level in the past 24 hours in Delhi-NCR at 268 and Delhi at 277.
(With inputs from Agencies)