Air quality in Delhi improved marginally with overall AQI settled at 302 µgm-3 on the National Ambient Air Quality Index ( NAAQI ) on Friday.
According to System of Air Quality and Weather Forecasting And Research ( SAFAR ), air quality improved to poor category from Very Poor.
“Surface-level winds are calm, but likely to pick up during the day. Under the influence of fresh Western D(1) Delhi: The overall air quality has improved to the Poor category from Very Poor as forecast,”
Citing MeT factors, it further said that Surface-level winds are calm but will pick up during the day. Under the influence of fresh Western Disturbance, isolated to scattered rainfall and better ventilation conditions are expected on Friday night and Saturday and Air Quality Index is likely to further improve on to the lower end of the Poor to Moderate category by December 12.”
“However, respite is not expected to last longer. As an aftermath of WD, high moisture availability with higher air holding capacity, dense fog formation is expected (mainly during early morning hours) which will lead to deterioration of AQI to Poor to lower end of the Very Poor category on December 13 and 14th,” it said.
Meanwhile, values of Suspended Particulate Matters ( SPMs), PM 10 and 2.5 were recorded 265 and 122 µgm-3.