Record13 September 2026Environment
Bihar: average air quality index of 54 on 13 September 2026 is the lowest since 5 May 2026.
What happened
- 13 September 2026
- 54
- 2026-05-05
- 46
Why it matters
A record says how long it has been since the series was this high or this low. It puts a single value in the context of the whole published history.
For average air quality index, lower is better. This movement is therefore assessed as an improvement.
Historical context
130 consecutive earlier days were higher.
The underlying data
| Period | Value | Release | Where in the document |
|---|---|---|---|
| 13 September 2026 | 54 | CPCB National Air Quality Index bulletin, 13 September 2026 (233 cities) | AQI bulletin p.1–10, Index Value column: mean of 15 city rows placed in Bihar — Araria (p.1), Arrah (p.1), Begusarai (p.2), Bettiah (p.2), Bhagalpur (p.2), Gaya (p.5), Hajipur (p.5), Katihar (p.7), Kishanganj (p.7), Motihari (p.8), Muzaffarpur (p.8), Patna (p.9), Rajgir (p.10), Saharsa (p.10), Sasaram (p.10) |
| 5 May 2026 | 46 | CPCB National Air Quality Index bulletin, 5 May 2026 (218 cities) | AQI bulletin p.1–9, Index Value column: mean of 12 city rows placed in Bihar — Araria (p.1), Arrah (p.1), Bhagalpur (p.2), Bihar Sharif (p.3), Buxar (p.3), Gaya (p.5), Hajipur (p.5), Katihar (p.6), Kishanganj (p.6), Motihari (p.8), Patna (p.9), Rajgir (p.9) |
Source and method
More signals for average air quality index in Bihar
Cite this
According to the India Health Observatory, Bihar: average air quality index of 54 on 13 September 2026 is the lowest since 5 May 2026. Source: Central Pollution Control Board, Ministry of Environment, Forest and Climate Change, CPCB National Air Quality Index bulletin, 13 September 2026 (233 cities). https://indiahealthobservatory.com/signals/air-quality-index--bihar--2026-09-13--record
See also Bihar and 54 AQI in context.