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Delhi’s air the morning after Diwali
Diwali fell on Sunday 8 November. CPCB’s bulletin for Monday 9 November, which covers the night of the fireworks, put Delhi at AQI 344 (Very Poor), from 47 of 59 stations. 12 of the 59 stations did not report.
- Fri 6 Nov382Very Poor57 of 59 stations
- Sat 7 Nov369Very Poor59 of 59 stations
- Sun 8 NovDiwali376Very Poor59 of 59 stations
- Mon 9 NovMorning after344Very Poor47 of 59 stations
In 6 of the 7 years from 2019 to 2025, the bulletin for the day after Diwali was higher than the one for Diwali day, by 6 to 140 points; in 2022 it was 10 points lower. This year’s Diwali-day figure, 376, is the third highest of the 8 Diwali-day figures from 2019 to 2026.
Some stations were not reporting. ThePrint reported on 9 November that data from 10 of Delhi’s 59 monitoring stations was missing on Monday morning, among them RK Puram, PUSA, NSIT Dwarka and Nehru Nagar, which had each recorded an AQI above 400 on Sunday. Because the city figure is an average of the stations, ThePrint noted that the gaps could skew it. ThePrint also reported that as many as 28 of 39 stations went blank the morning after Diwali in 2025 (ThePrint, 9 November 2026). The Hindustan Times found the same pattern that year: its analysis of CPCB and DPCC data showed only 9 stations, about 23% of the network, recorded continuous data on Diwali night (Hindustan Times, 22 October 2025).
| Year | Diwali | Diwali day | Day after | Change |
|---|---|---|---|---|
| 2019 | Sun 27 Oct | 337 | 368 | +31 |
| 2020 | Sat 14 Nov | 414 | 435 | +21 |
| 2021 | Thu 4 Nov | 382 | 462 | +80 |
| 2022 | Mon 24 Oct | 312 | 302 | -10 |
| 2023 | Sun 12 Nov | 218 | 358 | +140 |
| 2024 | Thu 31 Oct | 328 | 339 | +11 |
| 2025 | Mon 20 Oct | 345 | 351 | +6 |
| 2026 | Sun 8 Nov | 376 | 344 | -32 |
Source: CPCB daily AQI bulletins, one figure for the whole city over 24 hours, issued at 4 pm. 2019 to 2025 from the UrbanEmissions.Info extraction of the same bulletins. Diwali dates are the gazetted holiday each year. The station count is CPCB’s own and does not say that every hour was complete. A city figure cannot separate firework smoke from stubble smoke or weather. Delhi after Diwali 2026 has the station-by-station figures for the night and the morning after, and the Delhi page draws the whole season against 2019 to 2025.
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