EnviroNearby

Goodhue County, Minnesota air quality history

Daily Air Quality Index summaries from EPA monitors in Goodhue, Minnesota, 1996–2025.

90%
Good days in 2025
38
Median daily AQI, 2025
0
Days above 100 in 2025
239
Days with an AQI in 2025 (of 365)

In 2025, EPA reported a daily Air Quality Index (AQI) for Goodhue, Minnesota on 239 days. 214 of those days (90%) were in the Good range, and the median daily AQI was 38. That median is about the same as the typical monitored county in Minnesota (median 37 across 21 counties), and about the same as the typical monitored U.S. county (40). The main pollutant was ozone on 239 days. Across the years with fuller monitoring, the share of Good days rose: an average of 73% in 2003–2005 versus 89% in 2023–2025.

EPA did not report an AQI for every day of 2025 here (239 of 365 days). Figures describe monitored days only; seasonal monitoring (for example, ozone measured only in warmer months) can make a county look cleaner or dirtier than a full-year record would.

Years with fewer than 120 monitored days (1996, 1997) are shown in the table but left out of comparisons and trend statements.

How the days broke down each year

Each bar is one year. The colored segments show the share of monitored days that fell in each AQI category.

Share of monitored days in each AQI category, by year0%25%50%75%100%1996: Good 9 of 9 days19961997: Good 31 of 31 days2003: Good 84 of 122 days2003: Moderate 33 of 122 days2003: Unhealthy for Sensitive Groups 5 of 122 days20032004: Good 157 of 183 days2004: Moderate 26 of 183 days2005: Good 115 of 176 days2005: Moderate 56 of 176 days2005: Unhealthy for Sensitive Groups 5 of 176 days20052006: Good 122 of 154 days2006: Moderate 31 of 154 days2006: Unhealthy for Sensitive Groups 1 of 154 days2007: Good 147 of 183 days2007: Moderate 32 of 183 days2007: Unhealthy for Sensitive Groups 4 of 183 days20072008: Good 145 of 175 days2008: Moderate 30 of 175 days2009: Good 162 of 182 days2009: Moderate 20 of 182 days20092010: Good 170 of 188 days2010: Moderate 17 of 188 days2010: Unhealthy for Sensitive Groups 1 of 188 days2011: Good 173 of 186 days2011: Moderate 11 of 186 days2011: Unhealthy for Sensitive Groups 2 of 186 days20112012: Good 191 of 223 days2012: Moderate 32 of 223 days2013: Good 190 of 213 days2013: Moderate 23 of 213 days20132014: Good 198 of 216 days2014: Moderate 18 of 216 days2015: Good 202 of 214 days2015: Moderate 12 of 214 days20152016: Good 202 of 214 days2016: Moderate 12 of 214 days2017: Good 230 of 244 days2017: Moderate 14 of 244 days20172018: Good 206 of 231 days2018: Moderate 24 of 231 days2018: Unhealthy for Sensitive Groups 1 of 231 days2019: Good 203 of 216 days2019: Moderate 13 of 216 days20192020: Good 201 of 210 days2020: Moderate 9 of 210 days2021: Good 189 of 212 days2021: Moderate 23 of 212 days20212022: Good 210 of 220 days2022: Moderate 10 of 220 days2023: Good 198 of 238 days2023: Moderate 35 of 238 days2023: Unhealthy for Sensitive Groups 5 of 238 days20232024: Good 232 of 248 days2024: Moderate 16 of 248 days2025: Good 214 of 239 days2025: Moderate 25 of 239 days2025
  • Good
  • Moderate
  • Unhealthy for Sensitive Groups
  • Unhealthy
  • Very Unhealthy
  • Hazardous

Typical and high-end AQI over time

The median is the middle day of the year. The 90th percentile is the level that only the highest 10% of days exceeded.

Median and 90th-percentile daily AQI, by year0501001996: 90th percentile AQI 181997: 90th percentile AQI 222003: 90th percentile AQI 872004: 90th percentile AQI 542005: 90th percentile AQI 842006: 90th percentile AQI 672007: 90th percentile AQI 612008: 90th percentile AQI 582009: 90th percentile AQI 542010: 90th percentile AQI 502011: 90th percentile AQI 492012: 90th percentile AQI 582013: 90th percentile AQI 512014: 90th percentile AQI 502015: 90th percentile AQI 482016: 90th percentile AQI 472017: 90th percentile AQI 482018: 90th percentile AQI 512019: 90th percentile AQI 482020: 90th percentile AQI 462021: 90th percentile AQI 582022: 90th percentile AQI 472023: 90th percentile AQI 712024: 90th percentile AQI 482025: 90th percentile AQI 511996: Median AQI 111997: Median AQI 142003: Median AQI 452004: Median AQI 402005: Median AQI 462006: Median AQI 442007: Median AQI 422008: Median AQI 422009: Median AQI 412010: Median AQI 382011: Median AQI 392012: Median AQI 382013: Median AQI 402014: Median AQI 382015: Median AQI 372016: Median AQI 342017: Median AQI 342018: Median AQI 382019: Median AQI 372020: Median AQI 352021: Median AQI 392022: Median AQI 382023: Median AQI 432024: Median AQI 382025: Median AQI 381996200320052007200920112013201520172019202120232025
  • Median daily AQI
  • 90th-percentile daily AQI

Main pollutant by day, 2025

On each monitored day, the AQI reflects whichever measured pollutant had the highest index. This counts how many days each pollutant set the AQI. A pollutant that was not measured here cannot appear.

PollutantDays as main pollutantShare of monitored days
Ozone239100%

Year-by-year data

Annual AQI summary by year
YearDays with AQIGoodModerateUnhealthy for Sensitive GroupsUnhealthyVery UnhealthyHazardousMedian AQI90th pct.Max AQIMain pollutant
2025239214250000385197Ozone
2024248232160000384867Ozone
20232381983550004371133Ozone
2022220210100000384771Ozone
2021212189230000395890Ozone
202021020190000354687Ozone
2019216203130000374897Ozone
20182312062410003851133Ozone
2017244230140000344880Ozone
2016214202120000344787Ozone
2015214202120000374887Ozone
2014216198180000385097Ozone
2013213190230000405187Ozone
2012223191320000385890Ozone
20111861731120003949112Ozone
20101881701710003850101Ozone
20091821622000004154100Ozone
2008175145300000425890Ozone
20071831473240004261133Ozone
20061541223110004467119Ozone
20051761155650004684143Ozone
2004183157260000405497Ozone
2003122843350004587147Ozone
1997313100000142229PM10
19969900000111818PM10

What this data can and can’t tell you

It is a county-level summary. EPA reports one AQI per day for the county, based on the monitors operating there. Air at a particular street, school or home can differ, especially near roads, industry or wildfire smoke.

It is not a health assessment. The AQI is EPA’s scale for communicating daily air quality. A county’s history can’t tell you what the health risk is for any particular person. For daily conditions and health guidance, see AirNow.

Rules change over time. EPA has revised AQI breakpoints, most recently for fine particles in 2024, so some year-to-year change can reflect the scale rather than the air.

Counties in Minnesota with a similar median AQI in 2025

All monitored counties in Minnesota

Source: U.S. EPA AirData, “Annual AQI by County” files for 1996–2025 (EPA download page). EPA file dates: 2026-06-26. Imported into EnviroNearby November 5, 2026. How we use this data · Report a problem