Delhi post-Diwali air pollution
What happened before and after this story. Background events not previously covered were summarised by AI.
- Background
Supreme Court allows limited green firecrackers in Delhi-NCR for Diwali 2025
On 15 October 2025 India's Supreme Court eased a firecracker ban in Delhi-NCR, allowing green crackers to be sold and used in fixed hours around Diwali.
- Background
Delhi's average AQI hits 376 on Diwali day, in 'very poor' range
Delhi's average air quality index reached 376 on Diwali day, in the 'very poor' category, up from 369 the day before.
Delhi wakes up to 'very poor' air after Diwali, with some areas above 400
The morning after Diwali, Delhi's average AQI was 376, and Sonia Vihar hit 449 as firecracker smoke piled onto air that was already bad.
Loni, 30 km from Delhi, ranks among the world's most polluted places
Loni in Uttar Pradesh averaged PM2.5 of 112.5 over the past year, more than 22 times the WHO limit, and the air worsened further after Diwali.
Delhi's PM2.5 readings went blank on Diwali night just as they neared 1,000
On Diwali night, 43 of Delhi's 59 air monitoring stations had gaps in PM2.5 data, and 14 of them last showed readings of 900 or more.
Delhi's Diwali air was the worst in 5 years, and data went missing too
Delhi's air hit its worst Diwali level in five years, but PM2.5 data from dozens of monitoring stations went blank at the peak. Here's what we know.