SmogRank / United States / Washington / Vancouver
Vancouver, month by month
Vancouver, Washington has a measured daily mean on 1,321 days since 1 January 2023. Its worst month was January 2026, at 59 US AQI (13.2 µg/m³), 859th of 2,617 cities on that month's world ranking. Its cleanest was May 2025, at 17 US AQI (3.0 µg/m³). 2025 averaged 33 US AQI (6.0 µg/m³), against 27 US AQI (4.9 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
1 month
| Month | Why |
|---|---|
| Oct 2026 | 4 of 11 days measured; a month needs 8. The others: 5 with no readings from the monitor, 2 with readings for part of the day (a day needs 18 hours). |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Vancouver's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| January 2026 | 5913.2 µg/m³ | 859thof 2,617 | Washington and Oregon, United States, January 2026 Washington, United States, January 2026 |
| November 2023 | 5511.4 µg/m³ | 375thof 2,243 | – |
| August 2026 | 5410.8 µg/m³ | 736thof 2,896 | North-western United States and Canada, 4 to 22 August 2026 |
| January 2025 | 529.8 µg/m³ | 1,031stof 2,474 | – |
| November 2025 | 529.8 µg/m³ | 1,067thof 2,715 | – |
| December 2025 | 529.6 µg/m³ | 1,433rdof 3,006 | – |
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.
Vancouver's worst days
| Day | US AQI | Episode |
|---|---|---|
| 5 Aug 2026 | 14954.9 µg/m³ | North-western United States and Canada, 4 to 22 August 2026 |
| 4 Aug 2026 | 13348.3 µg/m³ | North-western United States and Canada, 4 to 22 August 2026 |
| 24 Jun 2026 | 12143.7 µg/m³ | – |
| 1 Jan 2026 | 11641.5 µg/m³ | Washington, United States, January 2026 |
| 20 Aug 2023 | 11440.8 µg/m³ | North-western United States and Canada, August 2023 |
| 25 Jan 2026 | 9331.5 µg/m³ | Washington and Oregon, United States, January 2026 |
| 5 Jul 2024 | 9030.1 µg/m³ | – |
| 2 Feb 2023 | 8929.3 µg/m³ | – |
| 6 Aug 2026 | 8829.1 µg/m³ | North-western United States and Canada, 4 to 22 August 2026 |
| 6 Sept 2024 | 8527.2 µg/m³ | North-western United States and Canada, 4 to 11 September 2024 |
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, Vancouver, Washington, United States, 1 Jan 2023 – 5 Oct 2026. Monitor data from AirNow, via OpenAQ and from the publisher directly; sources listed at smogrank.com/sources. smogrank.com/us/vancouver/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.
Vancouver now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-12 21:07 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).