Metro area air quality · 2025
Bemidji, MN
Median AQI 36 (Good). 79.1% of monitored days rated Good across this metro's EPA monitoring network.
- 36
- Median AQI
- 79.1%
- Good-air days
- 9
- Unhealthy days
- 65%
- Cleaner than US metros
Bemidji, MN posted a 2025 median AQI of 36 (Good) with 79.1% Good days
According to the U.S. EPA Air Quality System, the Bemidji, MN CBSA recorded a median AQI of 36 across 363 monitored days in 2025, with 79.1% rated Good and 9 unhealthy or worse. This is an annual metro comparison, not a live advisory.
Data source EPA Air Quality System (AQS)
- Cleaner than US metros
- The Bemidji, MN CBSA's 79.1% Good-day share places it cleaner than 65% of US metros in 2025.
- Closest median-AQI peer
- Atlantic City-Hammonton, NJ (82.2% Good, median AQI 36) is the closest nationwide median-AQI peer to Bemidji, MN.
- 2020–2025 Good-day shift
- Bemidji, MN's Good-day share moved -7.7 points from 2020 to 2025 (median AQI +6).
- Median AQI
- Median AQI: 36
Aggregated from EPA Air Quality System (2025), 363 monitored days. EPA AQS →
The verdict
Bemidji, MN's median AQI 36 is in the lower (cleaner) CBSA tercile on this site. On the EPA scale the metro runs good, cleaner than the median US metro, with a median AQI of 36 and 79.1% of 363 monitored days in the Good band.
- 36
- median AQI · Good
- 79.1%
- days rated Good
- 65%
- cleaner than US metros
- 191
- worst single reading
9 days reached Unhealthy or worse across the metro's monitors in 2025.
Annual release change
What changed in the 2025 EPA annual release
- Bemidji, MN metro's Unhealthy-category days rose from 1 to 9 between the 2024 and 2025 EPA annual releases, a change of +8 days.
- Bemidji, MN metro's Good-day share fell from 84.8% to 80.8% between the 2024 and 2025 EPA annual releases, a change of -4.0 percentage points.
- Bemidji, MN metro's peak single-day AQI rose from 177 to 191 between the 2024 and 2025 EPA annual releases, a change of +14 points.
Bemidji, MN's median AQI 36 is in the lower (cleaner) CBSA tercile on this site. Signature read: median AQI 36 (low tercile vs CBSA corpus). Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 36 over 363 measured days in 2025 (Good / Good). The monitored-day split lands at 287 Good (79%), 59 Moderate (16%), and 8 Unhealthy-for-Sensitive-Groups (2%). The 90th-percentile AQI finished at 69; the highest single-day reading hit 191 (Unhealthy).
Across 2020–2025, Good-day share shifted -7.7 points and median AQI moved +6 (worsening). The annual record contains 9 days at Unhealthy or worse. Metros with comparable AQI profiles include Atlantic City-Hammonton, NJ (82.2% good, AQI 36); Barnstable Town, MA (93.7% good, AQI 36); Claremont-Lebanon, NH-VT (83.6% good, AQI 36).
Air Quality Summary
Median AQI
36
Good
Good Days
79.1%
287 of 363 days
Max AQI
191
Unhealthy
Health Grade
Good
90th pct: 69
AQI Day Breakdown (2025)
Distribution of 363 monitored days across EPA AQI categories.
Good
287
79%
Moderate
59
16%
USG
8
2%
Unhealthy
9
2%
Very Unhealthy
0
0%
Hazardous
0
0%
Health Impact Assessment
The Bemidji, MN metro area's air quality is rated Good based on 79.1% good air days. There were 9 unhealthy days in 2025 when outdoor activity should be limited.
Air quality is acceptable most days, but 8 days reached "Unhealthy for Sensitive Groups" and peak AQI reached 191. Sensitive groups should monitor real-time conditions at AirNow.gov.
How does the Bemidji, MN metro compare?
How Bemidji, MN compares
5-Year Air Quality Trend
Air quality is worsening in the Bemidji, MN metro. Highest Good-day share: 2022 (91.9%, 318 of 346 monitored days).
| Year | Good | Moderate | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|
| 2020 | 318 | 41 | 0 | 30 | 76 |
| 2021 | 281 | 51 | 2 | 29 | 283 |
| 2022 | 318 | 28 | 0 | 23 | 65 |
| 2023 | 247 | 107 | 1 | 27 | 156 |
| 2024 | 308 | 54 | 1 | 36 | 177 |
| 2025 | 287 | 59 | 9 | 36 | 191 |
Metros with a similar median AQI
CBSA peers nationwide whose annual median AQI sits near Bemidji, MN (36).
Atlantic City-Hammonton, NJ
Median AQI 36 · 82.2% Good-day share
Barnstable Town, MA
Median AQI 36 · 93.7% Good-day share
Claremont-Lebanon, NH-VT
Median AQI 36 · 83.6% Good-day share
Crestview-Fort Walton Beach-Destin, FL
Median AQI 36 · 93.9% Good-day share
East Stroudsburg, PA
Median AQI 36 · 88.3% Good-day share
Jackson, TN
Median AQI 36 · 74.3% Good-day share
Metros with similar unhealthy-day exposure
A second relationship type: metros whose unhealthy-or-worse day count is closest to Bemidji, MN's 9 (independent of median AQI).
Deming, NM
9 unhealthy-or-worse days · median AQI 17
Wenatchee, WA
9 unhealthy-or-worse days · median AQI 35
Brainerd, MN
8 unhealthy-or-worse days · median AQI 39
El Centro, CA
10 unhealthy-or-worse days · median AQI 64
Fairbanks, AK
10 unhealthy-or-worse days · median AQI 44
Fargo, ND-MN
7 unhealthy-or-worse days · median AQI 37
Frequently Asked Questions
What does AQI 36 mean for health? ▼
How many unhealthy air days does Bemidji, MN have? ▼
What is the air quality in the Bemidji, MN metro area? ▼
Is air quality in Bemidji, MN getting better or worse? ▼
How does Bemidji, MN compare to other metro areas? ▼
What is the 90th percentile AQI for Bemidji, MN? ▼
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset for Bemidji, MN, 2025. See our methodology for how AQI, median, and coverage figures are computed.
Read our methodology , how this data is sourced, computed, and verified.
Source: U.S. EPA Air Quality System (AQS) Annual AQI by CBSA summary, Bemidji, MN · 2020–2025