Delhi Grapples with Cold Wave, Air Quality in 'very Poor' Category

Delhi Grapples with Cold Wave, Air Quality in 'very Poor' Category

Delhi Grapples with Cold Wave, Air Quality in 'very Poor' Category

According to experts, the spike in pollution levels this time was largely due to meteorological factors; low wind speed and high relative humidity trapped local pollutants emitted by vehicles, industries and other sources such as garbage burning. "The pollution level continues to be unsafe for the third day but Mr. Kejriwal has not awakened. he has not paid heed to the Delhi BJP's demand to call an All Party Meeting [to discuss] the issue", said Delhi BJP chief Manoj Tiwari. The index was 5000 sqm/second on Tuesday, the IITM had said.

Delhi is facing its highest pollution levels since Diwali, with the city's air quality remaining in the "severe" category for the third consecutive day on Monday.

According to the SAFAR, the overall air quality over Delhi is "very poor".

The overall PM2.5 level - fine particulate matter in the air with a diameter of less than 2.5 micrometer - was recorded at 369 and the PM10 level at 533, the Central Pollution Control Board (CPCB) said.

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The air quality is likely to remain in the severe category for the next couple of days.

While, the national capital has been battling air pollution for quite a few years now, air quality in Kolkata has dropped significantly over the last few months and in November it was the most polluted city in India.

Among the industrial areas of outer Delhi where operations have been prohibited till Wednesday, the air quality showed improvements in Bawana and Narela where it was in the very poor range as opposed to severe on Monday.

The EPCA directed the traffic police to deploy special teams and ensure congestion-free traffic flow particularly in identified high traffic corridors.

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Mr. Tiwari alleged that Mr. Kejriwal had made many poll promises to control pollution, including mechanical cleaning of roads, sprinkling of water, tree plantation, banning construction work and installing air purifiers, but the Delhi government had "failed" at fulfilling "any of them". An AQI above 400 falls in the "severe" category.

In the National Capital Region (NCR), Faridabad at 327, Ghaziabad at 398, Greater Noida at 394, Noida at 386 and Gurugram at 310 also fared in the "very poor" zone.

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

"The wind speed and ventilation index are highly unfavourable for dispersion of pollutants", it said.

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Ventilation index is the speed at which pollutants can get dispersed.

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