Metro area air quality · 2025

Minot, ND

Median AQI 38 (Good). 78.2% of monitored days rated Good across this metro's EPA monitoring network.

38
Median AQI
78.2%
Good-air days
5
Unhealthy days
58%
Cleaner than US metros

Aggregated from EPA Air Quality System (2025), 243 monitored days. EPA AQS →

The verdict

The Minot, ND metro runs good on the EPA scale, cleaner than the median US metro, a median AQI of 38 with 78.2% of 243 monitored days in the Good band.

38
median AQI · Good
78.2%
days rated Good
58%
cleaner than US metros
283
worst single reading

5 days reached Unhealthy or worse across the metro's monitors in 2025.

Insights: Minot, ND metro. Aggregated EPA AQS monitors across this Core-Based Statistical Area logged a median Air Quality Index of 38 over 243 measured days in 2025, which corresponds to a Good band and a Good metro-wide health grade. The monitored-day split lands at 190 Good days (78%), 41 Moderate (17%), and 7 Unhealthy-for-Sensitive-Groups (3%). The 90th-percentile AQI finished at 72 while the highest single-day reading hit 283 (Very Unhealthy). Metro residents averaged roughly 23.5 clean-air days per 30-day window across the reporting year.

Across the 2020–2025 trend window, good days shifted by -154 and the median AQI moved +3 points, which classifies the multi-year trajectory as worsening. The metro recorded 5 unhealthy-or-worse days combined, on those days the EPA recommends that sensitive groups limit prolonged outdoor exertion, and many schools and athletic programs adjust outdoor activity accordingly. Metros with comparable AQI profiles include Appleton, WI (78.5% good, AQI 38); Atlantic City-Hammonton, NJ (79.6% good, AQI 38); Barnstable Town, MA (92.5% good, AQI 38).

Air Quality Summary

Median AQI

38

Good

Good Days

78.2%

190 of 243 days

Max AQI

283

Very Unhealthy

Health Grade

Good

90th pct: 72

AQI Day Breakdown (2025)

Distribution of 243 monitored days across EPA AQI categories.

Good

190

78%

Moderate

41

17%

USG

7

3%

Unhealthy

4

2%

Very Unhealthy

1

0%

Hazardous

0

0%

Health Impact Assessment

Good

The Minot, ND metro area's air quality is rated Good based on 78.2% good air days. There were 5 unhealthy days in 2025 when outdoor activity should be limited.

Air quality reached unhealthy levels on 5 days in 2025 (4 Unhealthy, 1 Very Unhealthy). Sensitive groups, including people with asthma, COPD, cardiovascular conditions, children, and adults over 65, should review the daily breakdown and follow local advisories.

Sensitive group advisory

People with asthma, COPD, heart disease, children, pregnant women, and adults 65+ should follow EPA AQI alerts daily and limit outdoor exertion when AQI exceeds 100. Real-time conditions: airnow.gov.

How does the Minot, ND metro compare?

How Minot, ND compares

Good-day share better than US avg
Minot, ND 78.2%
Appleton, WI 78.5%
US average 71.3%
Median AQI better than US avg
Minot, ND 38
Appleton, WI 38
US average 41
Unhealthy days / yr worse than US avg
Minot, ND 5
Appleton, WI 1
US average 1

5-Year Air Quality Trend

Air quality is worsening in the Minot, ND metro. Best year: 2020 (344 good days).

Year Good Moderate Unhealthy Median AQI
2020 344 22 0 35
2021 284 62 4 37
2022 315 44 0 37
2023 244 101 6 42
2024 298 59 2 37
2025 190 41 4 38

Metros with Similar Air Quality

Metro areas across the US with a similar median AQI to Minot, ND.

Appleton, WI

AQI 38 · 78.5% good

38

Atlantic City-Hammonton, NJ

AQI 38 · 79.6% good

38

Barnstable Town, MA

AQI 38 · 92.5% good

38

Bay City, MI

AQI 38 · 71.8% good

38

Cadillac, MI

AQI 38 · 89.5% good

38

Claremont-Lebanon, NH-VT

AQI 38 · 81.3% good

38

More Air Quality Data

Explore EPA air quality rankings and guides across U.S. metros and counties.

Cleanest Metro Areas

U.S. metros ranked by their share of Good air-quality days.

Worst Air Quality

Counties and metros with the most unhealthy air days.

All Metro Areas

Annual AQI by CBSA for every monitored U.S. metro area.

Best and Worst City Air

What drives urban air quality and how metro areas compare.

Air Quality Guides

Frequently Asked Questions

What is the air quality in the Minot, ND metro area? ▼
The Minot, ND metro area has a median Air Quality Index (AQI) of 38, rated "Good." 78.2% of monitored days (190 out of 243) had good air quality in 2025.
How many unhealthy air days does Minot, ND have? ▼
In 2025, the Minot, ND metro area recorded 5 unhealthy air days (4 Unhealthy, 1 Very Unhealthy, 0 Hazardous). The maximum AQI reached 283.
Is air quality in Minot, ND getting better or worse? ▼
Air quality in the Minot, ND metro is worsening based on 5-year trends (2020-2025). Best year: 2020 with 344 good days. Worst year: 2025 with 190 good days.
What does AQI 38 mean for health? ▼
An AQI of 38 is "Good", air quality is satisfactory and poses little or no health risk. This is the best category on the EPA's AQI scale.
What is the 90th percentile AQI for Minot, ND? ▼
The 90th percentile AQI for the Minot, ND metro area is 72, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 283 (Very Unhealthy).
How does Minot, ND compare to other metro areas? ▼
The Minot, ND metro has 78.2% good air days. Similar metros: Appleton, WI (78.5% good), Atlantic City-Hammonton, NJ (79.6% good), Barnstable Town, MA (92.5% good).

Data Sources

Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by CBSA dataset, 2020–2025. 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 files (metro-level) · 2020–2025

Every figure on PlainAir is rendered directly from EPA AQS air-quality monitoring data, no number is typed in by an editor. This page draws directly on EPA AQS air-quality monitoring data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.