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After 2 Days Of Clean Air, Delhi’s Air Quality Slips Into The ‘Very Poor’ Category

The weather forecasters have predicted that Delhi’s air quality is likely to remain in the ‘very poor’ category in the coming days

Air Pollution: Experts asks government to gear up for winter’s pollution levels
Highlights
  • Air Quality Index on November 20 breached 300 mark and settled at 326
  • Drizzling during weekend helped wash out accumulated particulates: SAFAR
  • Air quality not likely to slip into ‘severe’ category in coming days: SAFAR

New Delhi: The air quality of Delhi, which breathed relatively clean air over the last two days, once again turned ‘very poor’ today as the impact of sporadic drizzle in flushing out pollutants ebbed and more vehicles hit the streets on the first working day of the week.

However, forecasters have emphasised that the city’s air quality will remain in the ‘very poor’ category and chances of it deteriorating further in the coming days is less as incursion of pollutants from external sources has stopped.

The Central Pollution Control Board’s (CPCB) National Air Quality Index had Delhi in the ‘very poor’ zone with a score of 326. It was 292 yesterday and 298 on Saturday.

Also Read: Outdoor Air Pollution Cause For 6 Percent Of India’s Total Disease Burden In 2016, Says Report

An AQI value between 301-400 is classified as ‘very poor’. Prolonged exposure to such air quality may trigger respiratory illness, the CPCB says.

More than Delhi, areas surrounding the city received drizzle. It helped wash out the accumulated particulates. That is the reason the city enjoyed the season’s best quality air over the last two days.

But now the impact of rain is slowly diminishing. Temperature levels have dropped and moisture has also marginally increased. The current air quality is a play of those meteorological conditions and emissions from internal sources, SAFAR project director Gufran Beig said.

Also Read: Air Pollution: Pollution Levels In Neighboring Uttar Pradesh Is Worse Than Delhi

He said the level of pollutants would show some increase over the next two days but air quality was not likely to turn ‘severe’ in the AQI scale.

Incursion of emissions from external sources such as paddy stubble burning has stopped and the wind direction has also turned north-westerly, which is bringing cold wave from the upper Himalayas.

SAFAR (System of Air Quality and Weather Forecasting and Research), an agency of the Union Ministry of Earth Sciences, recorded the average values of PM2.5 and PM10 at 154 and 243 micrograms per cubic metre, as against the prescribed standards 60 and 100.

PM2.5 and PM10 are descriptions for ultrafine particulates which remain suspended in the air and enter the respiratory system with inhalation, causing a host of complications, both pulmonary and cardiovascular.

Also Read: From City To Countryside, City Pollution Witnesses Reverse Migration

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