• search
For Quick Alerts
For Daily Alerts

Delhi pollution: Air quality 'very poor' again


New Delhi, Nov 20: The air quality of Delhi, which breathed relatively clean air over the last two days, once again turned 'very poor' 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.

Delhi's air quality 'very poor' again

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. 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. 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.


For Daily Alerts

For Breaking News from Oneindia
Get instant news updates throughout the day.

Notification Settings X
Time Settings
Clear Notification X
Do you want to clear all the notifications from your inbox?
Settings X
We use cookies to ensure that we give you the best experience on our website. This includes cookies from third party social media websites and ad networks. Such third party cookies may track your use on Oneindia sites for better rendering. Our partners use cookies to ensure we show you advertising that is relevant to you. If you continue without changing your settings, we'll assume that you are happy to receive all cookies on Oneindia website. However, you can change your cookie settings at any time. Learn more