Median AQI
38
Good
Minnesota · County air quality · 2025
Crow Wing County, Minnesota
Median AQI 38 (Good). 86.6% of monitored days rated Good, direct from EPA Air Quality System stations.
- 38
- Median AQI
- 86.6%
- Good-air days
- 0
- Unhealthy days
- 68%
- Cleaner than US counties
The verdict
According to EPA Air Quality System monitoring data, Crow Wing County's air is good on balance, cleaner than the median US county, a median AQI of 38 with 86.6% of 179 monitored days in the Good band, driven mainly by Ozone.
- 38
- median AQI · Good
- 86.6%
- days rated Good
- Ozone
- main pollutant
- 68%
- cleaner than US counties
Not one day crossed into the Unhealthy tier; the worst single reading was AQI 105.
Data updated July 2026
- Good · 155 d · 86.6%
- Moderate · 23 d · 12.8%
- USG · 1 d · 0.6%
How did Crow Wing County's air break down in 2025?
Across 179 monitored days, 155 fell in the Good band (AQI 0–50) and 0 reached Unhealthy or worse. The worst single day peaked at AQI 105 (USG).
EPA AQS →Air quality data from EPA Air Quality System (2025). 179 days monitored. Median AQI: 38 (Good).
Insights: Crow Wing County, Minnesota. EPA monitors recorded a median Air Quality Index of 38 across 179 measured days in 2025, earning a Good classification and a Good health grade. Of those days, 155 (87%) fell in the Good band (AQI 0–50), 23 (13%) registered Moderate readings, and 1 (1%) reached Unhealthy for Sensitive Groups. The 90th-percentile AQI settled at 59, while the worst single-day peak hit 105 (USG). Residents averaged about 26.0 clean-air days per 30-day window during the monitoring year.
The full pollutant mix ranks as Ozone (117 days), PM2.5 (62 days). Across the 2020–2025 trend window, good days shifted by -183 and the median AQI moved +7 points, placing the multi-year trajectory at worsening. The worst single reading over the 2020–2025 window was AQI 105, usg but never Unhealthy. Nearby counties show comparable readings: Anoka (82.1% good, AQI 38); Becker (84.7% good, AQI 38); Beltrami (88.8% good, AQI 37); Blue Earth (82.7% good, AQI 38); Carlton (92.9% good, AQI 35); Cass (94.4% good, AQI 22).
Air Quality Summary
Good Days
86.6%
155 of 179 monitored days
11.6pp vs 75% target
Max AQI Recorded
105
USG
Health Grade
Good
90th-pct AQI 59
Crow Wing County, Good days share 86.6%
National avg
Share of monitored days at AQI 0-50 (Good band).
Crow Wing County, Unhealthy-or-worse share 0.0%
National avg
Share of monitored days above AQI 150 (Unhealthy or worse). Bar maxes at 10% (worst-county ceiling).
AQI Day Breakdown (2025)
Distribution of 179 monitored days across EPA AQI categories.
Good
155
87%
Moderate
23
13%
USG
1
1%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Pollutant Breakdown
Days where each pollutant was the primary driver of AQI readings in Crow Wing County.
- Ozone · 117 days · 65.4%
- PM2.5 · 62 days · 34.6%
Health Impact Assessment
Good
Crow Wing County's air quality is rated Good based on 86.6% good air days. No unhealthy air days were recorded in 2025.
Air quality was acceptable on 86.6% of monitored days in 2025, with a median AQI of 38. Unusually sensitive people can check real-time conditions at AirNow.gov during high-pollution events.
The dominant pollutant is Ozone, driving AQI on 117 of 179 monitored days.
5-Year Air Quality Trend
Air quality is worsening in Crow Wing County. Best year: 2020 (338 good days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 338 | 21 | 0 | 0 | 31 | 79 |
| 2021 | 289 | 63 | 2 | 2 | 36 | 246 |
| 2022 | 324 | 41 | 0 | 0 | 37 | 67 |
| 2023 | 244 | 112 | 8 | 1 | 43 | 165 |
| 2024 | 298 | 67 | 1 | 0 | 38 | 137 |
| 2025 | 155 | 23 | 1 | 0 | 38 | 105 |
How does Crow Wing County compare?
How Crow Wing County compares
Good-day share better than US avg
Crow Wing County 86.6%
Anoka County, Minnesota 82.1%
US average 76.5%
Median AQI about average
Crow Wing County 38
Anoka County, Minnesota 38
US average 38
Unhealthy days / yr about average
Crow Wing County 0
Anoka County, Minnesota 1
US average 0
Other Counties in Minnesota
Air quality comparison for nearby counties in Minnesota.
Counties with Similar Air Quality
Counties across the US with a similar median AQI to Crow Wing County.
Adams County, Illinois
AQI 38 · 94.4% good
Anoka County, Minnesota
AQI 38 · 82.1% good
Atlantic County, New Jersey
AQI 38 · 79.6% good
Avery County, North Carolina
AQI 38 · 93.9% good
Barnstable County, Massachusetts
AQI 38 · 92.5% good
Bay County, Michigan
AQI 38 · 71.8% good
What Crow Wing County's air means for you
The air here stays in the breathable range year-round, with Ozone the main thing to watch.
- Sensitive groups (asthma, heart conditions, children, older adults) should check the AQI on high-Ozone days, the guide explains what a median of 38 means for exposure. Health guidance
- See how Crow Wing County ranks against every monitored U.S. county on Good-day share. County rankings
- Compare Crow Wing County with its Minnesota neighbours before drawing a conclusion about the region. All of Minnesota
Based on 179 EPA-monitored days in 2025; figures reflect only days the monitors reported. Source: EPA Air Quality System annual summaries.
More Air Quality Data
Air Quality Guides
Frequently Asked Questions
What is the air quality in Crow Wing County, Minnesota? ▼
Crow Wing County has a median Air Quality Index (AQI) of 38, rated "Good." 86.6% of monitored days (155 out of 179) had good air quality in 2025.
What is the main pollutant in Crow Wing County? ▼
The primary pollutant in Crow Wing County is Ozone (O3), which was the main AQI driver on 117 days (65% of monitored days). Can trigger asthma, reduce lung function, and cause chest pain.
How many unhealthy air days does Crow Wing County have? ▼
In 2025, Crow Wing County recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 105.
Is the air quality in Crow Wing County getting better or worse? ▼
Air quality in Crow Wing County is worsening based on 5-year trends (2020-2025). Best year: 2020 with 338 good days. Worst year: 2025 with 155 good days.
What does AQI 38 mean for health? ▼
Crow Wing County's median AQI of 38 falls in the "Good" category. See the <a href="/guides/understanding-aqi" class="underline">AQI category guide</a> for what each range means for health.
How does Crow Wing County compare to other counties in Minnesota? ▼
Crow Wing County has 86.6% good air days. Nearby counties in Minnesota: Anoka (82.1% good), Becker (84.7% good), Beltrami (88.8% good), Blue Earth (82.7% good), Carlton (92.9% good), Cass (94.4% good).
What is the 90th percentile AQI in Crow Wing County? ▼
The 90th percentile AQI for Crow Wing County is 59, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 105 (USG).
Data Sources
Primary Source: U.S. Environmental Protection Agency (EPA), Air Quality System (AQS), Annual AQI by County dataset, 2020–2025 (aqs.epa.gov). For current conditions (not shown here — this page is historical annual data), see EPA AirNow (airnow.gov). See our methodology for how AQI, median, and coverage figures are computed.
Informational only, not professional advice. Data from EPA AQS. See our disclaimer.
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.