New Delhi, Nov. 2 -- The brief respite from pollution was short-lived- after a day of clearer skies, Delhi's air quality witnessed another sharp surge today.

According to the Centre Pollution Control Board's (CPCB) data, the city's Air Quality Index (AQI) readings on Saturday climbed up to a value of 303, jumping by 85 points from Friday's 218, pushing Delhi's air again from the 'poor' category to the 'very poor' category.

As per CPCB classification, an AQI between 0 and 50 is 'good', 51 to 100 'satisfactory', 101 to 200 'moderate', 201 to 300 'poor', 301 to 400 'very poor', and 401 to 500 'severe'.

This marks the second major jump in Delhi's pollution levels in three days. On Thursday, the city's 24-hour average AQI had surged to 373 - ...