Published: Fri, December 28, 2018
Science | By Michele Flores

New Delhi faces risky air pollution level

New Delhi faces risky air pollution level

"Pollution has become a very unsafe issue.Toxic air is causing health hazards for both adults and children.In view of the falling standard of air quality, the CPCB has issued an advisory.it is very shameful that despite being the capital of the country, Delhi is the most polluted State", Mr. Tiwari said.

The air quality in the national capital has remained at the "severe" level since Sunday.

The deterioration in air quality was largely due to the cold wave and associated meteorological conditions that have made dispersal of pollutants hard.

The AQI is an assessment of air quality based on six parameters.

With Delhi recording this winter's worst air quality, the Supreme Court-appointed Environment Pollution (Prevention and Control) Authority (EPCA) on Monday banned industrial activity in six hotspots and construction activities in Delhi, Faridabad and Gurugram till Wednesday. "However, it could not happen in Patna on Tuesday due to less rainfall and continuous vehicular emission", said Birendra Kumar, public relations officer at Bihar State Pollution Control Board. "Also, we sanctioned a large phase of Metro. we are making all efforts on our part".

The "severe" quality of air was attributed to wind speed and other meteorological factors remaining "highly unfavourable" for dispersion of pollutants.

According to the SAFAR, Delhi's overall air quality is expected to remain in severe range until Monday morning and thereafter start to improve slowly and may touch very poor range.

As per the global air quality monitoring platform AirVisual, Delhi's pollution at the "hazardous" level with 317 US AQI (Air Quality Index) with PM2.5 air pollution.

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Surface wind speeds have come down and the mixing height or room available for vertical dispersion has come down as well.

Dahiya also said the government should immediately close down schools and urge people to curtail outdoor activities given the serious health effects of the current pollution levels.

On Saturday, the task force had advised against usage of private cars, especially those running on diesel, and asked people, especially those with respiratory ailments, to avoid exposure to this toxic air.

The overall PM2.5 level - fine particulate matter in the air with a diameter of less than 2.5 micrometer - was recorded at 410 and the PM10 level at 585 here, the CPCB said.

According to sources, Delhi's air pollution levels have constantly been on the rise since the festival of Diwali.

In terms of pollution, Delhi's Air Quality Index (AQI) at 4 p.m on Wednesday was recorded at 384 (very poor), against Tuesday's "severe" air quality of 409.

The index on Tuesday was 5,000 sqm/second on Tuesday, the IITM said.

The advisory also recommended frequent wet mopping and using masks known as N-95 or P-100 respirators only for outdoor activities.

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