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Delhi air pollution: 29 red alert days in November

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Air pollution
source: dubeat.com

New Delhi: Delhi’s air quality was so poor in the month of November this year that according to China’s pollution warning system, 29 days of the 30 would have been termed as ‘red alert’ days.

A red alert is issued in China if there are more than 350 micrograms of coarse particulate matter (PM10) in one cubic metre.

According to Greenpeace India’s analysis of the National Air Quality Index, the period of September to November in Delhi had 33 such days, 29 of which were in November.

While the standard level of PM10 per cubic meter is 100 micrograms, the monitoring station at Anand Vihar recorded the level at 1,433 micrograms earlier in the week. That is a staggering 14 times more than the average level of particulates.

A red alert in China shuts down polluting industries and schools, while vehicular pollution is strictly checked and directives issued. A similar system in India is being called forth by activists.

Greenpeace India campaigner, Sunil Dahiya said, “We have monitoring stations and the data is available on the government’s sites. But, the average citizens are not aware of the data. There is a need for an alarm system.”

India’s own governmental data showed that several cities in North India were in worse shape than Beijing, added Dahiya.

“We can no longer deny that we are in a state of crisis, and equally, that this crisis creates the imperative to come up with policies to put an end to India’s air pollution crisis,” said Dahiya.

Both national and regional plans are required on a long-term basis to truly affect the growing pollution crisis, according to environmentalists. The general population needs to be made aware of the crisis so that a collective effort can come into place.

“The Delhi Government’s car rationing policy and move to shut down power plants will reduce pollution, but we need to move to renewable energy,” added Dahiya.

 

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Air quality Improves in Delhi After Several Years

Delhi's air quality improves to 'Good', best in years

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air quality
According to the System of Air Quality and Weather Forecasting (Safar) and the Central Pollution Control Board (CPCB), the overall air quality index (AQI) of Delhi, which was at 47, falling in the good category. Pixabay

Delhi hasn’t breathed this clean in years. Rainfall in and around brought the capital’s air quality on Saturday to the “good” condition, while PM 2.5 levels, recorded at 15 by the US Embassy and 17 by Safar, were the lowest in this year.

According to the System of Air Quality and Weather Forecasting (Safar) and the Central Pollution Control Board (CPCB), the overall air quality index (AQI) of Delhi, which was at 47, falling in the good category.

The level of PM2.5 was recorded at 17 and the PM10 level was recorded at 31 on Saturday, Safar said. These denote levels of particulate matter, of two sizes up to 2.5 and 10 micrometres in diameter, in the atmosphere. In comparison, the AQI in New York was recorded at “good” at 17, at 34 in Frankfurt, while in London, it was “moderate” at 52.

A CPCB scientist said that in 2017, the city had witnessed the AQI recorded below 50 – at 42, but could not recall the exact date. The CPCB is recording AQI since 2015 and such good conditions have not been seen in the last four years.

Gufran Baig, scientist and programme director, SAFAR, said that this is the lowest AQI recorded this year and it will remain good for another two to three days. He said that the air quality has improved due to widespread rain received in the northern parts of the country.

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The air quality has improved due to widespread rain received in the northern parts of the country. Pixabay

“Rajasthan, Himachal Pradesh, Punjab, Haryana and Uttar Pradesh, all areas surrounding are receiving a good amount of rainfall this year which is improving the air condition in the city. Such kind of rain was never received earlier so the air quality has never reached this level,” Baig said.

Also Read: 300 More Electric Vehicle (EV) Charging Stations to Open in Delhi

Mahesh Palawat, Vice President, Meteorology and Climate Change, at private forecaster Skymet Weather told IANS that this was the longest spell of clean air experienced by Delhiites.

“The widespread rain has helped in improving air quality in Delhi as well as in Noida and Gurugram. Increased rainfall activity is likely to bring more respite in coming days,” he said, adding that the rain has helped in settling down pollutants. (IANS)