Fargo Air Quality in 2021
In 2021, Fargo's air quality (Fargo, ND-MN area) had a median daily AQI of 42 (Good) across 363 monitored days. 17 days (4.7%) reached Unhealthy for Sensitive Groups or worse, 227 were Good, and the year's peak AQI was 211 (Very Unhealthy). Fine particulate matter (PM2.5) set the daily AQI on 231 of those days. The cleanest month of 2021 was November (median AQI 30, 0 days above 100) and the worst was July (median 74, 11 days above 100, peak 211).
- Good: 62.5%
- Moderate: 32.8%
- Unhealthy for Sensitive Groups: 2.2%
- Unhealthy or worse: 2.5%
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How was Fargo's air quality in 2021?
Good on a typical day: median AQI 42, with 17 days above AQI 100 out of 363 monitored — the 7th cleanest of 7 years on record for the area.
- ✓Peak AQI in 2021: 211 (Very Unhealthy).
- ✓Fine particulate matter (PM2.5) was the main pollutant on 231 days.
- ✓Cleanest month: November; worst: July.
Frequently asked questions
What was the average AQI in Fargo in 2021?▾
EPA's Air Quality System puts Fargo's (Fargo, ND-MN) median daily AQI for 2021 at 42, which is Good. 17 days were Unhealthy for Sensitive Groups or worse and the year's highest AQI was 211.
Which month had the worst air quality in Fargo in 2021?▾
The cleanest month of 2021 was November (median AQI 30, 0 days above 100) and the worst was July (median 74, 11 days above 100, peak 211).
Was 2021 a good or bad year for Fargo's air?▾
Among the 7 years EPA has published for the area (2019–2025), 2021 ranks 7th cleanest by days above AQI 100 — the worst year on record here. 2021's median of 42 is above the area's typical annual median of 38.
Fargo month by month in 2021
Fargo air quality month by month, 2021 (Fargo, ND-MN, EPA AQS daily AQI)
| Month | Days monitored | Median AQI | Days above 100 | Peak AQI | Main pollutant |
|---|---|---|---|---|---|
| January | 31 | 38 | 0 | 84 | PM2.5 |
| February | 28 | 33 | 0 | 82 | PM2.5 |
| March | 31 | 38 | 0 | 58 | PM2.5 |
| April | 30 | 41 | 0 | 75 | O3 |
| May | 31 | 53 | 0 | 78 | PM2.5 |
| June | 28 | 52 | 1 | 126 | O3 |
| Julyworst | 31 | 74 | 11 | 211 | PM2.5 |
| August | 31 | 48 | 5 | 161 | PM2.5 |
| September | 30 | 36 | 0 | 60 | O3 |
| October | 31 | 34 | 0 | 85 | PM2.5 |
| Novembercleanest | 30 | 30 | 0 | 56 | PM2.5 |
| December | 31 | 32 | 0 | 62 | PM2.5 |
How 2021 compares
Among the 7 years EPA has published for the area (2019–2025), 2021 ranks 7th cleanest by days above AQI 100 — the worst year on record here.
2021's median of 42 is above the area's typical annual median of 38.
Activity-specific thresholds: running, cycling, kids' sports.
Right now in Fargo
The latest EPA AirNow observation puts Fargo's AQI at 27 (PM2.5). The figures above are multi-year annual statistics, not today's reading.
View current Fargo air quality →Source: EPA Air Quality System (AQS) pre-generated Daily AQI by CBSA files — daily AQI by CBSA (Fargo, ND-MN), 2019–2025. Daily AQI per CBSA is the highest AQI reported by any monitor in the area that day; the defining parameter is the pollutant that set it. Month and season statistics pool every such day in the period across all years listed. Retrieved 2026-09-09.