Delhi's air quality in 'moderate' category, likely to degrade to 'poor' category in over next 3 days

By Rajan Nath -- October 27, 2021 10:25 am -- Updated:October 27, 2021 10:25 am

Delhi's overall air quality is in the 'moderate' category on Wednesday but it is likely to degrade to the 'poor' category over the next three days due to an increase in "fire emission", according to the Centre-run System of Air Quality and Weather Forecasting And Research (SAFAR).

According to the Central Pollution Control Board, Delhi's air quality index (AQI) stood at 195 on Wednesday. However, several areas of Delhi including Anand Vihar, Chandni Chowk and Jahangirpuri recorded 'poor' air quality, with the AQI values standing at 263, 242 and 257, respectively.

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While ITO and IGI Airport stand in the 'moderate' category with AQI 175 and 166 respectively, according to the Central Pollution Control Board (CPCB) data.

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The concentrations of PM 2.5 and PM 10 stood at 66 and 139 respectively both in the 'moderate' category.

"Delhi's AQI is in the moderate category. Fire emission is expected to increase due to dry weather over north India (upwind region) in the next 3 days due to which PM2.5 is likely to increase. Drier conditions tend to increase PM10. Thus overall AQI is likely to degrade to moderate to the poor category for the next 3 days. The effective fire count over the northwest region is 348 and its share in PM2.5 is 8 per cent as westerly winds are partly favourable," SAFAR said in its bulletin.

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As per government agencies, an AQI within the range of 0-5 is regarded as 'good', 51-100 is 'satisfactory', 101-200 is 'moderate', 201-300 is 'poor' and 301-400 is 'very poor' and 401-500 is considered 'severe'.

According to India Meteorological Department (IMD), the national capital woke up to clear skies and the minimum temperature settled at 15.0 degrees Celsius while the maximum was recorded at 29.0 degrees Celsius.

-PTC News

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