Outside the usual range11 September 2026Environment
Uttar Pradesh: average air quality index over the 7 days to 11 September 2026 was 80, above the 5-year median of 62 for the same week (+29%).
What happened
- 7-day mean to 11 September 2026
- 80
- That day alone: 86
- 5-year median, same week
- 62
- Change
- +18
- Change, per cent
- +29%
Why it matters
Daily figures mostly reflect the weather, so the observatory compares the mean of the last seven days with the same week in up to five earlier years. A breach means this week sits well outside what those years would lead you to expect, and by at least 15%. It is reported when an unusual run begins and for the latest day while it lasts, not every day.
For average air quality index, lower is better. This movement is therefore assessed as a deterioration.
Historical context
The number being averaged changed (about 25 now against 19 in earlier years), so part of this reflects which places are measured. Same week in earlier years: 2025 62, 2024 63, 2023 59, 2022 91, 2021 62. Daily values are compared as 7-day means because a single day mostly reflects weather.
The underlying data
| Period | Value | Release | Where in the document |
|---|---|---|---|
| 11 September 2026 | 86 | CPCB National Air Quality Index bulletin, 11 September 2026 (242 cities) | AQI bulletin p.1–13, Index Value column: mean of 25 city rows placed in Uttar Pradesh — Agra (p.1), Baghpat (p.2), Bareilly (p.2), Bulandshahr (p.3), Fatehpur sikri (p.5), Firozabad (p.5), Gajraula (p.5), Ghaziabad (p.5), Greater noida (p.5), Jhansi (p.6), Kanpur (p.7), Khora (p.7), Khurja (p.7), Lucknow (p.8), Mathura (p.8), Meerut (p.8), Modinagar (p.8), Moradabad (p.8), Muzaffarnagar (p.9), Noida (p.9), Prayagraj (p.10), Raebareli (p.10), Shamli (p.11), Varanasi (p.12), Vrindavan (p.13) |
| 10 September 2026 | 114 | CPCB National Air Quality Index bulletin, 10 September 2026 (243 cities) | AQI bulletin p.1–13, Index Value column: mean of 24 city rows placed in Uttar Pradesh — Agra (p.1), Baghpat (p.2), Bareilly (p.2), Bulandshahr (p.3), Fatehpur sikri (p.5), Firozabad (p.5), Gajraula (p.5), Ghaziabad (p.5), Greater noida (p.5), Jhansi (p.6), Kanpur (p.7), Khora (p.7), Lucknow (p.8), Mathura (p.8), Meerut (p.8), Modinagar (p.8), Moradabad (p.8), Muzaffarnagar (p.9), Noida (p.9), Prayagraj (p.10), Raebareli (p.10), Shamli (p.11), Varanasi (p.12), Vrindavan (p.13) |
| 9 September 2026 | 103 | CPCB National Air Quality Index bulletin, 9 September 2026 (252 cities) | AQI bulletin p.1–13, Index Value column: mean of 27 city rows placed in Uttar Pradesh — Agra (p.1), Baghpat (p.2), Bareilly (p.2), Bulandshahr (p.3), Fatehpur sikri (p.5), Firozabad (p.5), Gajraula (p.5), Ghaziabad (p.5), Gorakhpur (p.5), Greater noida (p.5), Hapur (p.6), Jhansi (p.6), Kanpur (p.7), Khora (p.7), Khurja (p.7), Lucknow (p.8), Mathura (p.8), Meerut (p.8), Modinagar (p.8), Moradabad (p.9), Muzaffarnagar (p.9), Noida (p.9), Prayagraj (p.10), Raebareli (p.10) … and 3 more |
Source and method
- Release
- CPCB National Air Quality Index bulletin, 11 September 2026 (242 cities)Archived fileOriginal URLFirst seen 3 Oct 2026
More signals for average air quality index in Uttar Pradesh
Cite this
According to the India Health Observatory, Uttar Pradesh: average air quality index over the 7 days to 11 September 2026 was 80, above the 5-year median of 62 for the same week (+29%). Source: Central Pollution Control Board, Ministry of Environment, Forest and Climate Change, CPCB National Air Quality Index bulletin, 11 September 2026 (242 cities). https://indiahealthobservatory.com/signals/air-quality-index--uttar-pradesh--2026-09-11--baseline_breach
See also Uttar Pradesh and 86 AQI in context.