The AQI in all 36 monitoring stations listed under Centre's Sameer app was under 450 on Tuesday, while some were under 400 as well.

Due to the fluctuating air quality in Delhi, Stage IV of the Graded Response Action Plan (GRAP) has been implemented across the National Capital Region (NCR) since December 16.

The national capital woke to another day of foggy morning followed by light drizzle on Monday that kept the temperature low, however the Air Quality Index (AQI) remained in the ‘severe’ category.

The minimum temperature, according to the India Meteorological Department, was recorded at 8 degrees Celsius on Sunday.

Several areas in Delhi also measured the AQI under the 'severe' category. Anand Vihar recorded an AQI of 434, Ashok Vihar 450, Bawana 472, Narela 430, DTU 425 and Wazipur 455. Apart from them, several areas measured an AQI in the 'very poor' category,

Foggy conditions were observed early in the day, with humidity levels ranging from 79 per cent to 95 per cent.

Delhi’s poor air quality remains despite the strictest Stage IV curbs of the Graded Response Action Plan (GRAP).

With an average 24-hour AQI reading of 409 recorded daily, Delhi's air quality clocked five days of “severe” air over six days.

The city's weather added to the challenge, with a maximum temperature of 18.4 degrees Celsius, 2.3 degrees below the season's average, following drizzle in parts of Delhi on Monda

Parts of Delhi witnessed light rainfall early Monday, with temprature being recorded at 12-14 degrees Celcius, as per the India Meteorological Department (IMD). According to news agency ANI, the minimum temperature recorded in the city was 8 degrees Celsius,

The Air Quality Index (AQI) in the capital remained in the 'severe' category for the second straight day at 406