SmogRank / United States / Oregon / Bend
Bend, month by month
Bend has a measured daily mean on 1,307 days since 1 January 2023. Its worst month was August 2023, at 111 US AQI (39.6 µg/m³), 36th of 1,980 cities on that month's world ranking. Its cleanest was June 2026, at 14 US AQI (2.6 µg/m³). 2025 averaged 30 US AQI (5.4 µg/m³), against 46 US AQI (8.3 µg/m³) in 2024.
Every month since 2023
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
2 months
| Month | Why |
|---|---|
| Mar 2023 | 9 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive, 2 with under 18 hours of readings or readings that failed our checks. |
| Feb 2023 | 1 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive, 2 with under 18 hours of readings or readings that failed our checks. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Bend's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| August 2023 | 11139.6 µg/m³ | 36thof 1,980 | North-western United States and Canada, August 2023 |
| September 2024 | 6617.0 µg/m³ | 128thof 2,010 | North-western United States and Canada, 4 to 11 September 2024 |
| July 2024 | 6516.4 µg/m³ | 149thof 2,566 | North-western United States and Canada, July 2024 |
| August 2026 | 6315.6 µg/m³ | 365thof 2,896 | North-western United States and Canada, 4 to 22 August 2026 North-western United States and Canada, July and August 2026 |
| August 2024 | 6114.3 µg/m³ | 202ndof 2,010 | Oregon, Idaho and Utah, United States, August 2024 North-western United States and Canada, August 2024 |
| July 2023 | 5913.5 µg/m³ | 239thof 1,432 | – |
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.
Bend's worst days
| Day | US AQI | Episode |
|---|---|---|
| 28 Aug 2023 | 230154.5 µg/m³ | North-western United States and Canada, August 2023 |
| 20 Aug 2023 | 194116.5 µg/m³ | North-western United States and Canada, August 2023 |
| 16 Aug 2023 | 189109.5 µg/m³ | North-western United States and Canada, August 2023 |
| 21 Aug 2023 | 187107.5 µg/m³ | North-western United States and Canada, August 2023 |
| 18 Aug 2023 | 184102.0 µg/m³ | North-western United States and Canada, August 2023 |
| 24 Jul 2023 | 17792.2 µg/m³ | – |
| 27 Aug 2023 | 17285.7 µg/m³ | North-western United States and Canada, August 2023 |
| 29 Jul 2024 | 16068.9 µg/m³ | North-western United States and Canada, July 2024 |
| 9 Sept 2024 | 15865.7 µg/m³ | North-western United States and Canada, 4 to 11 September 2024 |
| 4 Aug 2026 | 15764.1 µg/m³ | North-western United States and Canada, 4 to 22 August 2026 North-western United States and Canada, July and August 2026 |
Daily means, the highest since 1 Jan 2023; 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, Bend, United States, 1 Jan 2023 – 11 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/bend/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.
Bend 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).