SmogRank / Canada / Alberta / Grande Prairie
Grande Prairie, month by month
Grande Prairie has a measured daily mean on 1,241 days since 1 January 2023. Its worst month was May 2023, at 172 US AQI (85.3 µg/m³), 1st of 1,600 cities on that month's world ranking. Its cleanest was April 2024, at 18 US AQI (3.2 µg/m³). 2025 averaged 52 US AQI (9.6 µg/m³), against 55 US AQI (11.1 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
5 months
| Month | Why |
|---|---|
| Jan 2026 | 2 of 31 days measured; a month needs 22. The others: 29 with under 18 hours of readings or readings that failed our checks. |
| Dec 2025 | No day measured. The others: 31 with under 18 hours of readings or readings that failed our checks. |
| Nov 2025 | 18 of 30 days measured; a month needs 21. The others: 12 with under 18 hours of readings or readings that failed our checks. |
| Mar 2023 | 11 of 31 days measured; a month needs 22. The others: 20 missing from OpenAQ's archive. |
| Feb 2023 | 3 of 28 days measured; a month needs 20. The others: 25 missing from OpenAQ's archive. |
A day counts once 18 hours of it are measured; a month needs 70% of its days.
Grande Prairie's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| May 2023 | 17285.3 µg/m³ | 1stof 1,600 | North-western United States and Canada, May 2023 North-western Canada and United States, May 2023and 1 more |
| September 2023 | 12746.1 µg/m³ | 8thof 2,176 | Alberta, Saskatchewan and British Columbia, Canada, September 2023 Alberta, British Columbia and Saskatchewan, Canada, September 2023and 1 more |
| June 2023 | 9934.6 µg/m³ | 49thof 1,603 | Alberta, Saskatchewan and British Columbia, Canada, June 2023 |
| July 2023 | 9633.1 µg/m³ | 36thof 1,432 | United States and Canada, July 2023 North-western Canada and United States, July 2023and 2 more |
| May 2024 | 8929.7 µg/m³ | 69thof 2,684 | North-western Canada and United States, 12 to 13 May 2024 North-western Canada and United States, 11 to 12 May 2024 |
| June 2025 | 8326.1 µg/m³ | 155thof 2,508 | North-western Canada and United States, June 2025 |
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.
Grande Prairie'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, Grande Prairie, 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/grande-prairie/history (accessed 13 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.
Grande Prairie now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 01:07 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).