SmogRank / Canada / British Columbia / Quesnel
Quesnel, month by month
Quesnel has a measured daily mean on 1,228 days since 1 January 2023. Its worst month was September 2023, at 94 US AQI (32.0 µg/m³), 30th of 2,176 cities on that month's world ranking. Its cleanest was June 2024, at 29 US AQI (5.3 µg/m³). 2025 averaged 49 US AQI (8.9 µg/m³), against 47 US AQI (8.5 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
4 months
| Month | Why |
|---|---|
| May 2026 | 19 of 31 days measured; a month needs 22. The others: 7 with no readings from the monitor, 4 with readings for part of the day (a day needs 18 hours), 1 with readings left out by our checks. |
| Jan 2026 | 15 of 31 days measured; a month needs 22. The others: 16 with no readings from the monitor. |
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 1 of 28 days measured; a month needs 20. The others: 2 with readings for part of the day (a day needs 18 hours), 25 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Quesnel's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| September 2023 | 9432.0 µg/m³ | 30thof 2,176 | Alberta, Saskatchewan and British Columbia, Canada, September 2023 Northern United States and Canada, August and September 2023 |
| July 2023 | 8527.1 µg/m³ | 49thof 1,432 | Alberta, British Columbia and Saskatchewan, Canada, July 2023 Alberta and British Columbia, Canada, July 2023 |
| August 2023 | 8024.8 µg/m³ | 78thof 1,980 | Northern United States and Canada, August and September 2023 North-western United States and Canada, August 2023 |
| September 2025 | 7320.7 µg/m³ | 201stof 3,104 | North-western Canada and United States, September 2025 North-western United States and Canada, August and September 2025 |
| May 2023 | 6416.2 µg/m³ | 130thof 1,600 | Northern United States and Canada, May 2023 |
| July 2026 | 6215.2 µg/m³ | 510thof 2,784 | North-western United States and Canada, July and August 2026 |
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.
Quesnel's worst days
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, Quesnel, Canada, 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/ca/quesnel/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.
Quesnel 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).