SmogRank / United States / North Dakota / West Fargo
West Fargo, month by month
West Fargo has a measured daily mean on 1,316 days since 1 January 2023. Its worst month was July 2025, at 75 US AQI (22.1 µg/m³), 166th of 2,889 cities on that month's world ranking. Its cleanest was June 2024, at 17 US AQI (3.1 µg/m³). 2025 averaged 46 US AQI (8.3 µg/m³), against 37 US AQI (6.6 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
West Fargo's worst months
| Month | US AQI | World rank | Episode |
|---|---|---|---|
| July 2025 | 7522.1 µg/m³ | 166thof 2,889 | North-eastern United States and Canada, 29 July to 9 August 2025 North-eastern United States and Canada, 24 to 28 July 2025and 1 more |
| June 2023 | 6818.0 µg/m³ | 304thof 1,603 | Eastern United States and Canada, June and July 2023 United States and Canada, June 2023 |
| September 2023 | 6516.5 µg/m³ | 145thof 2,176 | Northern United States, September 2023 Northern United States and Canada, August and September 2023 |
| June 2025 | 6516.5 µg/m³ | 347thof 2,508 | Northern United States and Canada, June 2025 Northern United States and Canada, May and June 2025 |
| July 2026 | 6416.0 µg/m³ | 474thof 2,784 | Northern United States and Canada, July 2026 |
| May 2023 | 6415.9 µg/m³ | 134thof 1,600 | Northern United States and Canada, May 2023 |
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.
West Fargo's worst days
| Day | US AQI | Episode |
|---|---|---|
| 1 Jun 2025 | 191113.0 µg/m³ | Northern United States and Canada, May and June 2025 |
| 16 Jul 2026 | 191112.0 µg/m³ | Northern United States and Canada, July 2026 |
| 18 May 2023 | 18199.0 µg/m³ | Northern United States and Canada, May 2023 |
| 12 Jul 2025 | 17793.2 µg/m³ | Northern United States and Canada, July 2025 |
| 2 Jun 2025 | 17081.9 µg/m³ | Northern United States and Canada, May and June 2025 |
| 14 Jun 2023 | 16575.4 µg/m³ | United States and Canada, June 2023 |
| 11 Jul 2025 | 16373.2 µg/m³ | Northern United States and Canada, July 2025 |
| 31 Jul 2025 | 15967.2 µg/m³ | North-eastern United States and Canada, 29 July to 9 August 2025 |
| 11 Sept 2024 | 15865.9 µg/m³ | – |
| 30 Jul 2025 | 15358.3 µg/m³ | North-eastern United States and Canada, 29 July to 9 August 2025 |
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, West Fargo, 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/west-fargo/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.
West Fargo now: the last 24 hours, its ranks today and the last 12 months day by day.
Updated 2026-10-13 02:07 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).