New Delhi, February 9 – Delhi's air quality deteriorated on Monday, slipping back into the 'poor' category after a day of respite in the 'moderate' category.
The Air Quality Index (AQI) was recorded at 216, a decline from Sunday's AQI of 189.
According to the Central Pollution Control Board's (CPCB) SAMEER app, at approximately 9 am, air quality at 25 monitoring stations was recorded as 'poor', while 12 stations reported 'moderate' air quality.
According to the CPCB, an AQI between zero and 50 is considered 'good', 51 to 100 'satisfactory', 101 to 200 'moderate', 201 to 300 'poor', 301 to 400 'very poor', and 401 to 500 'severe'.
On the weather front, the minimum temperature at Safdarjung settled at 9.1 degrees Celsius, approximately one degree above normal.
The maximum temperature is expected to hover around 23 degrees Celsius, with generally cloudy skies and haze likely during the day.
Station-wise data showed that the minimum temperature was recorded at 9.8 degrees Celsius in Palam, which was normal, 9.4 degrees Celsius at Lodhi Road, one degree above normal, 10.8 degrees Celsius at Ridge, one degree below normal, and 8.8 degrees Celsius at Ayanagar, two degrees below normal.