New Delhi (NVI): Delhi’s air quality slipped back into the “very poor” category today after remaining in the “severe” category for almost a week on the trot, with a change in the wind direction reducing the contribution of stubble burning in city’s pollution.
The city recorded an air quality index (AQI) of 388 at 9 am. The 24-hour average AQI was 476 on Tuesday.
However, the visibility in the city has reduced considerably due to the smog and haziness.
Reportedly, the national capital witnessed six “severe” air days till Tuesday. It had recorded seven “severe” air days in November last year.
Furthermore, the neighbouring cities of Faridabad (345), Ghaziabad (390), Noida (339), Greater Noida (322), and Gurugram (309), which fall in the National Capital Region (NCR), also recorded “very poor” air quality.
An AQI between 0-50 is considered good, 51-100 is satisfactory, 101-200 moderate, 201-300 poor, 301-400 very poor and 401-500 is marked as severe/hazardous.
In addition to this, the city recorded a minimum temperature of 11.4 degrees Celsius on Wednesday morning. Calm winds and low temperatures trap pollutants close to the ground, while favourable wind speed helps in their dispersion.