New Delhi, Dec. 19 -- The national Capital on Friday continued to breathe foul air, with Delhi's Air Quality Index (AQI) remaining in the 'very poor' category. At 4 p.m., the Central Pollution Control Board (CPCB) recorded an AQI of 374, indicating a slight improvement from the morning reading of 387 at 7:05 a.m.
However, the air quality had worsened earlier in the day, with the AQI dipping from Thursday's rolling average of 373 on Friday morning, according to CPCB data from the Sameer app.
The CPCB classifies air quality as 'moderate' when the AQI is between 101 and 200, 'poor' between 201 and 300, and 'very poor' between 301 and 400.
AQI levels above 400 fall under the 'severe' category. For the implementation of emergency Graded Respo...