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AQI continues to remain 'Hazardous' in parts of Delhi

New Delhi: Two days after Diwali, layer of smog continued to envelope the national capital on Friday. Anand Vihar stood at 585, around US Embassy at 467 and RK Puram at 343, all under 'Hazardous' category in Air Quality Index.

AQI hit as high as 999 near Anand Vihar

On November 8, AQI hit as high as 999 near Anand Vihar.

Delhi Police has banned entry of medium and heavy goods vehicles in Delhi for 3 days.

Delhi's pollution level post-Diwali nearly doubled in comparison to last year as people burst firecrackers before and after the Supreme Court stipulated time frame of 8 pm to 10 pm. The overall air quality index (AQI) Thursday was recorded in the "severe plus emergency" category at 642, according to Centre-run System of Air Quality and Weather Forecasting and Research (SAFAR) data.

In 2017, the AQI was recorded at 367, a day after Diwali, while in 2016 it was 425. The AQI this year was over 1.7 times that of 2017.

A "severe plus emergency" AQI essentially means that even healthy people may suffer from respiratory illnesses on prolonged exposure. This air will seriously affect those with ailments, according to a SAFAR advisory.

On Thursday, the PM2.5 (particles in the air with a diameter of less than 2.5 micrometres) level was recorded more than eight times the permissable limit at 492 gm-3. The PM10 (particles in the air with a diameter of less than 10 micrometres) level was recorded six times the permissable limit at 618 gm-3, according to SAFAR.

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In 2017, official data showed the PM10 level reached 595 gm-3 and PM2.5 was 407 gm-3. India's official permissible PM2.5 limit is 60 gm-3 while PM10 level is 100 gm-3. The sharp spike in pollution is caused by rampant burning of firecrackers that has led to the formation of a smoky layer across the national capital and drastically reduced visibility, authorities said.



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