Tuesday 22 January 2019
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business-standard - 11 days ago

Delhi s air quality deteriorates to severe category

Delhi s air quality deteriorated to the severe category Friday due to reduced wind speed even as authorities have forecast rainfall in the next couple of days which they said might lower the pollution level. According to the Central Pollution Control Board (CPCB) data, the overall air quality index (AQI) in the city was 402, which falls in the severe category. An AQI between 100 and 200 comes under the moderate category, 201 and 300 is considered poor , 301 and 400 very poor , while that between 401 and 500 severe . Twenty-two areas recorded severe air quality and 13 very poor , the CPCB said. In the National Capital Region (NCR), Ghaziabad, Faridabad and Greater Noida recorded severe air quality, while Gurgaon very poor air quality, it said. The overall PM2.5 level - fine particulate matter in the air with a diameter of less than 2.5 micrometers - in Delhi was recorded at 278, while the PM10 level was at 430, it said. The Centre-run System of Air Quality and Weather .

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