New Delhi, Nov 11: Delhi recorded its first “severe” air quality day of the year on Tuesday, with the overall Air Quality Index (AQI) reaching 428, according to the Central Pollution Control Board (CPCB).

The air quality, which was in the “very poor” for the last several days, slipped into the “severe” zone early Tuesday morning as stagnant weather conditions and local emissions contributed to a spike in pollution levels.

This is the first time this year that Delhi’s AQI has entered the “severe” range.

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