Median AQI
38
Good
Minnesota · County air quality · 2025
Goodhue County, Minnesota
Median AQI 38 (Good). 89.5% of monitored days rated Good, direct from EPA Air Quality System stations.
- 38
- Median AQI
- 89.5%
- Good-air days
- 0
- Unhealthy days
- 79%
- Cleaner than US counties
Goodhue County's 2025 annual median AQI is 38 (Good), with 89.5% Good days
According to the U.S. EPA Air Quality System, Goodhue County, Minnesota posted a 2025 median AQI of 38 (Good) across 239 monitored days, with 89.5% rated Good and 0 unhealthy or worse. This is an annual comparison, not today's advisory.
Data source EPA Air Quality System (AQS)
- Cleaner than US
- Goodhue County's 89.5% Good-day share places it cleaner than 79% of US counties in 2025.
- Closest median-AQI peer
- Adams County (94.7% Good, median AQI 38) is the closest nationwide median-AQI peer to Goodhue County.
- 2020–2025 trend
- Goodhue County's floor-qualifying Good-day share is worsening from 2020 to 2025 (95.7% → 89.5%).
- Median AQI
- Median AQI: 38
The verdict
According to EPA Air Quality System monitoring data, Goodhue County's air is good on balance, cleaner than most US counties, a median AQI of 38 with 89.5% of 239 monitored days in the Good band, driven mainly by Ozone.
- 38
- median AQI · Good
- 89.5%
- days rated Good
- Ozone
- main pollutant
- 79%
- cleaner than US counties
Not one day crossed into the Unhealthy tier; the worst single reading was AQI 97.
Annual release change
What changed in the 2025 EPA annual release
- Goodhue County's Good-day share fell from 93.5% to 89.5% between the 2024 and 2025 EPA annual releases, a change of -4.0 percentage points.
- Goodhue County's peak single-day AQI rose from 67 to 97 between the 2024 and 2025 EPA annual releases, a change of +30 points.
Data updated August 2026
- Good · 214 d · 89.5%
- Moderate · 25 d · 10.5%
How did Goodhue County's air break down in 2025?
Across 239 monitored days, 214 fell in the Good band (AQI 0–50) and 0 reached Unhealthy or worse. The worst single day peaked at AQI 97 (Moderate).
EPA AQS →Air quality data from EPA Air Quality System (2025). 239 days monitored. Median AQI: 38 (Good).
Insights: Goodhue County, Minnesota. EPA monitors recorded a median Air Quality Index of 38 across 239 measured days in 2025, earning a Good classification and a Good health grade. Of those days, 214 (90%) fell in the Good band (AQI 0–50), 25 (10%) registered Moderate readings, and 0 (0%) reached Unhealthy for Sensitive Groups. The 90th-percentile AQI settled at 51, while the worst single-day peak hit 97 (Moderate). Residents averaged about 26.9 clean-air days per 30-day window during the monitoring year.
The full pollutant mix ranks as Ozone (239 days). Across the 2020–2025 trend window, the share of monitored days rated Good shifted by -6.2 points (measured against 210 monitored days in 2020 and 239 in 2025, so raw day counts are not comparable) and the median AQI moved +3 points, placing the multi-year trajectory at worsening. The worst single reading over the 2020–2025 window was AQI 97, moderate but never Unhealthy. Nearby counties show comparable readings: Anoka (74.1% good, AQI 38); Becker (74.0% good, AQI 38); Beltrami (79.1% good, AQI 36); Blue Earth (65.3% good, AQI 42); Carlton (82.8% good, AQI 33); Cass (82.7% good, AQI 28).
Air Quality Summary
Good Days
89.5%
214 of 239 monitored days
14.5pp vs 75% target
Max AQI Recorded
97
Moderate
Health Grade
Good
90th-pct AQI 51
Goodhue County, Good days share 89.5%
National avg
Share of monitored days at AQI 0-50 (Good band).
Goodhue 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 239 monitored days across EPA AQI categories.
Good
214
90%
Moderate
25
10%
USG
0
0%
Unhealthy
0
0%
Very Unhealthy
0
0%
Hazardous
0
0%
Pollutant Breakdown
Days where each pollutant was the primary driver of AQI readings in Goodhue County.
- Ozone · 239 days · 100.0%
Health Impact Assessment
Good
Goodhue County's air quality is rated Good based on 89.5% good air days. No unhealthy air days were recorded in 2025.
Air quality was acceptable on 89.5% 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 239 of 239 monitored days.
5-Year Air Quality Trend
Air quality is worsening in Goodhue County. Highest Good-day share: 2020 (95.7%, 201 of 210 monitored days).
| Year | Good | Moderate | USG | Unhealthy | Median AQI | Max AQI |
|---|---|---|---|---|---|---|
| 2020 | 201 | 9 | 0 | 0 | 35 | 87 |
| 2021 | 193 | 23 | 0 | 0 | 39 | 90 |
| 2022 | 210 | 10 | 0 | 0 | 38 | 71 |
| 2023 | 198 | 35 | 5 | 0 | 43 | 133 |
| 2024 | 232 | 16 | 0 | 0 | 38 | 67 |
| 2025 | 214 | 25 | 0 | 0 | 38 | 97 |
How does Goodhue County compare?
How Goodhue County compares
Good-day share better than typical
Goodhue County 89.5%
Adams County, Illinois 94.7%
Typical US county 76.0%
Median AQI better than typical
Goodhue County 38
Adams County, Illinois 38
Typical US county 39
Unhealthy days / yr better than typical
Goodhue County 0
Adams County, Illinois 0
Typical US county 1
Counties with a similar median AQI
Nationwide peers within about the same annual median AQI as Goodhue County (38), not geographic neighbors.
Adams County, Illinois
Median AQI 38 · 94.7% Good-day share
Albemarle County, Virginia
Median AQI 38 · 81.0% Good-day share
Alexander County, North Carolina
Median AQI 38 · 93.5% Good-day share
Amador County, California
Median AQI 38 · 87.4% Good-day share
Anoka County, Minnesota
Median AQI 38 · 74.1% Good-day share
Avery County, North Carolina
Median AQI 38 · 92.3% Good-day share
Same primary pollutant: Ozone
Ozone led the AQI on the most monitored days here. These peers share that driver and the closest Good-day share (a second relationship type beyond median-AQI neighbors).
Callaway County, Missouri
89.6% Good-day share · median AQI 41
Huron County, Michigan
89.6% Good-day share · median AQI 38
Lincoln County, North Carolina
89.7% Good-day share · median AQI 41
Boone County, Indiana
89.7% Good-day share · median AQI 35
Graham County, North Carolina
89.8% Good-day share · median AQI 41
Ellis County, Texas
89.2% Good-day share · median AQI 35
Minnesota counties on the map
Geographic containment only, other monitored counties in Minnesota, independent of AQI or pollutant match.
What Goodhue 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 Goodhue County ranks against every monitored U.S. county on Good-day share. County rankings
- Compare Goodhue County with its Minnesota neighbours before drawing a conclusion about the region. All of Minnesota
Based on 239 EPA-monitored days in 2025; figures reflect only days the monitors reported. Source: EPA Air Quality System annual summaries.
Keep exploring the annual AQI record
Air-quality reading list
Frequently Asked Questions
What is the air quality in Goodhue County, Minnesota? ▼
Goodhue County has a median Air Quality Index (AQI) of 38, rated "Good." 89.5% of monitored days (214 out of 239) had good air quality in 2025.
What is the main pollutant in Goodhue County? ▼
The primary pollutant in Goodhue County is Ozone (O3), which was the main AQI driver on 239 days (100% of monitored days). Can trigger asthma, reduce lung function, and cause chest pain.
How many unhealthy air days does Goodhue County have? ▼
In 2025, Goodhue County recorded 0 unhealthy air days (0 Unhealthy, 0 Very Unhealthy, 0 Hazardous). The maximum AQI reached 97.
Is the air quality in Goodhue County getting better or worse? ▼
Air quality in Goodhue County is worsening across floor-qualifying years (2020-2025); years with fewer than 100 monitored days are excluded from that direction. Highest qualifying Good-day share: 2020 at 95.7% (201 of 210 days). Lowest qualifying Good-day share: 2023 at 83.2% (198 of 238 days).
What does AQI 38 mean for health? ▼
Goodhue County's median AQI of 38 falls in the "Good" category. See the AQI category guide for what each range means for health.
How does Goodhue County compare to other counties in Minnesota? ▼
Goodhue County has 89.5% good air days. Nearby counties in Minnesota: Anoka (74.1% good), Becker (74.0% good), Beltrami (79.1% good), Blue Earth (65.3% good), Carlton (82.8% good), Cass (82.7% good).
What is the 90th percentile AQI in Goodhue County? ▼
The 90th percentile AQI for Goodhue County is 51, meaning 90% of monitored days had an AQI at or below this level. The maximum AQI recorded was 97 (Moderate).
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. Spotted a figure that looks wrong? Report a correction.
Source: U.S. EPA Air Quality System (AQS) Annual AQI by county summary files for Goodhue County, Minnesota · 2020–2025
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Every figure on PlainAirData 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.