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Delhi's Air Quality Plummets to Hazardous Levels Post-Diwali

The National Capital Region faced severe air pollution in the aftermath of Diwali celebrations, with the Air Quality Index reaching hazardous levels and visibility significantly reduced across the city.

LSN India · 9 November 2026

Delhi's air quality deteriorated sharply following Diwali festivities, as smoke from fireworks accumulated over roads and residential areas throughout the evening. The Air Quality Index (AQI) climbed into the hazardous category, prompting health concerns among residents across the National Capital Region.

Visibility in various parts of the city dropped considerably as the haze intensified, creating challenging conditions for commuters and pedestrians. The thick smog blanketed neighbourhoods and major thoroughfares, with smoke concentrations building up through the evening hours.

The spike in pollution levels follows the traditional Diwali celebrations, during which large quantities of firecrackers are typically set off despite ongoing restrictions and public health advisories. Environmental experts have repeatedly highlighted the seasonal air quality crisis that grips Delhi in the weeks following major festivals.

Authorities typically issue health advisories during such episodes, recommending that vulnerable groups including children, elderly people, and those with respiratory conditions limit outdoor exposure. The situation often persists for several days or weeks depending on meteorological conditions and wind patterns in the region.