SmogRank / India / Uttar Pradesh / Bareilly
Bareilly, month by month
Bareilly has a measured daily mean on 533 days since 19 February 2025. Its worst month was December 2025, at 111 US AQI (39.5 µg/m³), 253rd of 3,006 cities on that month's world ranking. Its cleanest was August 2025, at 45 US AQI (8.1 µg/m³).
Every month since 2025
The US EPA's Air Quality Index for PM2.5 (2024 breakpoints). Show values as: µg/m³ · US AQI · India AQI · China AQI · European AQI · UK DAQI · Canada AQHI+. About the scales
Months without a mean, and why
3 months
| Month | Why |
|---|---|
| Oct 2026 | 3 of 11 days measured; a month needs 8. The others: 5 with no readings from the monitors, 3 with readings for part of the day (a day needs 18 hours). |
| Jan 2026 | 21 of 31 days measured; a month needs 22. The others: 10 with under 18 hours of readings or readings that failed our checks. |
| Feb 2025 | 10 of 28 days measured; a month needs 20. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Bareilly's worst months
| Month | US AQI | World rank |
|---|---|---|
| December 2025 | 11139.5 µg/m³ | 253rdof 3,006 |
| October 2025 | 10035.3 µg/m³ | 169thof 2,614 |
| November 2025 | 9934.9 µg/m³ | 231stof 2,715 |
| September 2026 | 8326.2 µg/m³ | 161stof 2,981 |
| February 2026 | 7722.8 µg/m³ | 452ndof 2,866 |
| September 2025 | 7622.6 µg/m³ | 162ndof 3,104 |
Monthly means over the days measured; finished months only. World rank: its place on that month's world ranking of every city with enough days. Each month opens that ranking.
Bareilly's worst days
| Day | US AQI | Episode |
|---|---|---|
| 3 Nov 2025 | 16271.8 µg/m³ | – |
| 3 Oct 2026 | 16068.5 µg/m³ | Uttar Pradesh, Rajasthan and Madhya Pradesh, India, October 2026 |
| 2 Nov 2025 | 15865.8 µg/m³ | – |
| 11 Dec 2025 | 15662.0 µg/m³ | – |
| 21 Oct 2025 | 15460.1 µg/m³ | – |
| 15 Oct 2025 | 15256.8 µg/m³ | – |
| 12 Dec 2025 | 15256.8 µg/m³ | – |
| 27 Oct 2025 | 14754.2 µg/m³ | – |
| 7 Dec 2025 | 14553.4 µg/m³ | – |
| 10 Dec 2025 | 13649.7 µg/m³ | – |
Daily means, the highest since 19 Feb 2025; the WHO's daily guideline is 15 µg/m³. Each date opens that day's world ranking, and each episode the bad-air spell it was part of.
Use this history
SmogRank, PM2.5 monthly and daily means, Bareilly, India, 19 Feb 2025 – 6 Oct 2026. Monitor data from CPCB via OpenAQ; sources listed at smogrank.com/sources. smogrank.com/in/bareilly/history (accessed 12 Oct 2026).
You're welcome to reuse a single chart, image or figure with this citation and a link. Terms. Raw monitor readings in bulk are published by OpenAQ, under each provider's licence.
Bareilly now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 17:07 UTC. Values are PM2.5 (fine particles), the median of each city's monitors, as the US AQI PM2.5 sub-index. Some low-cost readings: Sensor.Community, ODbL (data and licence). Some readings: Uzhydromet (Uzbekistan's Hydrometeorological Service); Department of Environment, Nepal; Vietnam's government monitors; Aurassure; Umhverfisstofnun (Environment Agency of Iceland); RMCAB (Secretaría Distrital de Ambiente, Bogotá); Love My Air (City and County of Denver), no reuse terms published (why we use them).