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1-min read

Delhi Air Quality Improves to 'Poor' Level After Overnight Drizzle

Most of the 17 monitoring stations of the CPCB in Delhi found air quality on Saturday in the "poor" bracket. In neighbouring Noida, Ghaziabad and Gurugram, the AQI also showed "poor" category.

News18.com

Updated:November 18, 2017, 11:49 AM IST
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Delhi Air Quality Improves to 'Poor' Level After Overnight Drizzle
People commute during the foggy in New Delhi. (Image: PTI)
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New Delhi: The air quality in the National Capital Region improved on Saturday to the "poor" level following overnight rain as the concentration of Particulate Matter (PM) decreased. Another government department, however, placed the air quality at "moderate".

The major pollutant, PM2.5, or particles with diameter less than 2.5 micro meter, was recorded at 288 units. The Central Pollution Control Board (CPCB) on Saturday recorded the Air Quality Index (AQI) of Delhi-NCR (at 288) at 10 am as compared to 299 at 7 pm on Friday, IANS reported.

Most of the 17 monitoring stations of the CPCB in Delhi found air quality on Saturday in the "poor" bracket. In neighbouring Noida, Ghaziabad and Gurugram, the AQI also showed "poor" category.

Mahesh Palwat, Director of Skymet, a private weather forecast agency, said air quality had improved due to overnight rain, wind from the northwest and cyclonic formation in Rajasthan.

"The western disturbance has moved away from hills and hill states that have witnessed rainfall and snowfall. So winds from northwest with speed of upto 15 kmph are bringing pollution levels down. The situation will be better day-by-day," Palawat said.

He said that rain always had a washout effect on particulate matter.

According to SAFAR (System of Air Quality and Weather Forecasting and Research), an app instituted by the Ministry of Earth Science, the air quality levels in Delhi improved to "moderate" on Saturday morning.

SAFAR records 24-hour rolling averages of PM10 and PM2.5 and uses this data to estimate the AQI. PM10 and PM2.5 are ultra-fine particles that are the dominant pollutants in Delhi.

An official of the India Meteorological Department said the city recorded one mm rainfall in the 24 hours till 8.30 am. on Saturday. The Safdarjung observatory recorded 1 mm rainfall, Palam 0.4 mm, Lodi Road 0.2 mm, Ayanagar 0.3 mm and Ridge 0.4 mm.

(With IANS Inputs)

| Edited by: Ananya Chakraborty
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