Kewaunee, Wisconsin Air Quality
Kewaunee County, Wisconsin (WI)
→ Stableover 10 years
10-Year AQI Trend
The solid line shows the median AQI each year. The dashed line shows the 90th percentile (worst 10% of days).
Air Quality Day Breakdown
Number of days per year in each EPA AQI category. Green = Good (AQI 0-50), Yellow = Moderate (51-100), Orange = Unhealthy for Sensitive Groups (101-150), Red = Unhealthy or worse (151+).
Year-by-Year Data
| Year | Median AQI | 90th Pct | Max AQI | Good Days | Moderate | Unhealthy+ | Pollutant |
|---|---|---|---|---|---|---|---|
| 2023 | 43 | 87 | 182 | 142 | 53 | 8 | Ozone |
| 2022 | 39 | 61 | 161 | 172 | 25 | 4 | Ozone |
| 2021 | 40 | 61 | 108 | 170 | 35 | 2 | Ozone |
| 2020 | 34 | 47 | 97 | 195 | 12 | 0 | Ozone |
| 2019 | 36 | 45 | 90 | 199 | 11 | 0 | Ozone |
| 2018 | 42 | 64 | 151 | 200 | 35 | 5 | Ozone |
| 2017 | 39 | 51 | 112 | 209 | 24 | 2 | Ozone |
| 2016 | 37 | 71 | 136 | 162 | 21 | 5 | Ozone |
| 2015 | 40 | 58 | 119 | 170 | 27 | 3 | Ozone |
| 2014 | 39 | 54 | 129 | 176 | 25 | 1 | Ozone |
What This Means for Kewaunee County Residents
Kewaunee, Wisconsin has received an Air Quality Grade of C (64/100) based on a decade of monitoring data from the EPA's air quality monitoring program. The current median AQI of 43 falls in the "Good" range.
The primary pollutant affecting this area is Ground-Level Ozone. Over the past 5 years, this area has averaged 3 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity. The American Lung Association's State of the Air report provides additional context on long-term health risks from air pollution exposure.
Related Cities in Wisconsin
Frequently Asked Questions
Kewaunee, Wisconsin has a current median AQI of 43, which falls in the "Good" range. The area has received an Air Quality Grade of C (64/100) based on 10 years of EPA monitoring data.
Air quality in Kewaunee, Wisconsin is stable over the past decade. The median AQI has changed by +4 points from 2014 to 2023.
Kewaunee, Wisconsin averages 3 unhealthy air quality days per year over the past 5 years. On these days, sensitive groups including children, the elderly, and those with respiratory conditions should limit outdoor activity.
The primary pollutant affecting Kewaunee, Wisconsin is Ground-Level Ozone. This is the dominant contributor to elevated AQI readings in the Kewaunee County area.
Kewaunee, Wisconsin averages 3 unhealthy air days per year. This is relatively low, making it a reasonable choice for asthma sufferers. The primary pollutant is Ground-Level Ozone, which is a known asthma trigger.
With a median AQI of 43 (Good), outdoor exercise in Kewaunee, Wisconsin is generally safe year-round. Kewaunee, Wisconsin averages 3 days per year when athletes should move workouts indoors.