This Diwali night saw a rise in air pollution levels in some pockets of the Capital while noise levels declined compared with last year, according to an air-noise pollution assessment report released by the Central Pollution Control Board (CPCB) on Wednesday.

A senior CPCB official said: “The rise in air pollution can be attributed to adverse meteorological conditions -- decrease in average temperature, low wind speed, and increase in humidity -- in and around Delhi and the fact that people probably burst more smoke-producing crackers.”