Delhi’s air quality saw a marginal improvement on Saturday with the pollution level coming down to the “very poor” category briefly after being “severe” due to unfavourable meteorological conditions.

According to the Central Pollution Control Board data, the overall air quality index (AQI) in the city was 397 but for a brief time, it had reached 417.

Twenty-four areas in Delhi recorded “severe” air quality while it was “very poor” in eight areas, the CPCB said.

In the NCR, Ghaziabad and Noida recorded “severe” air quality while Gurugram recorded “very poor” air quality, it said.

The overall PM2.5 level in Delhi was recorded at 275 while the PM10 level was at 429, the CPCB said.