Mahesh Palwat, Director of Skymet, a private weather forecast agency says the rains always have a washout effect on particulate matter
Rains on Friday night and early in the morning today brought down the air pollution levels marginally in Delhi/NCR. The Central Pollution Control Board (CPCB) recorded the particulate matter or PM 2.5 at 288 on Saturday, as compared to 299 on Friday at 7 pm.
The Central Pollution Control Board (CPCB) has 17 monitoring stations in Delhi and all stations recorded the air quality as “poor”.
The pollution levels in neighbouring Noida, Ghaziabad, and Gurugram was also in the category of “poor”.
The Director of private weather forecasting agency Skymet, Mahesh Palwat said, air quality has improved after overnight rains, wind from the northwest and cyclonic formation in Rajasthan.
“The western disturbance has moved away from hills and hill states that have seen rainfall and snowfall. So winds from northwest with speed of up to 15 kilometres per hour are bringing pollution level down. The situation will be better day-by-day,” Palwat said.
He also said the rains always have a washout effect on particulate matter.
However, 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 estimates the air quality index or AQI by considering the 24-hours rolling averages of PM10 and PM2.5
PM 2.5 pollutants are considered more dangerous than PM 10 as they are fine particles capable of entering the lungs and blood stream whereas PM 10 gets trapped in the throat.
Delhi had recorded 1 mm rainfall till 8:30 am on Saturday