Delhi’s air quality turns ‘severe’ due to ‘extremely calm surface winds’; AQI clocks as 455

The quality of air in Delhi deteriorated to the ‘severe’ category on Saturday morning, with overall Air Quality Index (AQI) standing at 445, prompting Ministry of Earth Science’s air quality monitor, System of Air Quality and Weather Forecasting And Research (SAFAR) to advise people to avoid all outdoor activities. The city had recorded an AQI of 332 (‘very poor’ category) the previous morning.

“The overall air quality has deteriorated and in the ‘severe’ category. Surface winds became extremely calm and the low dispersion condition led to accumulation and trapping of pollutants near-surface,” SAFAR said.

At 6 am on Saturday, the concentrations of the particulate matter (PM) with a diameter of 10 and 2.5 microns were recorded at 484 and 305, both falling under the ‘severe’ category respectively, Centre-run SAFAR said.

Air quality in parts of Delhi

According to the data shared by the Central Pollution Control Board, the AQI was recorded at 489 in Ashok Vihar, 445 in Bawana, 452 in Mathura Road, 464 in Dwarka Sector 8, 407 in Indira Gandhi International Airport (Terminal 3)

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