Wisconsin Air Quality

Real-time AQI data and air quality trends for 792 cities across Wisconsin.

Statewide Air Quality Overview

39
Average AQI
3314
Good Air Days
785
Moderate Days
Unhealthy Days
188
Highest AQI

Based on 2025 EPA data

Cleanest Air in Wisconsin

1. TaylorMedian AQI: 29
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2. MillstonMedian AQI: 29
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3. Alma CenterMedian AQI: 29
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4. HixtonMedian AQI: 29
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5. Black River FallsMedian AQI: 29
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Most Polluted in Wisconsin

1. UnityMedian AQI: 36
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2. SpencerMedian AQI: 36
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3. ColbyMedian AQI: 36
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4. CedarburgMedian AQI: 35
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5. BelgiumMedian AQI: 35
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Learn About Air Quality

What Is the AQI?
Understand how the Air Quality Index is calculated and what each level means for your health.
Pollutant Guide
Learn about PM2.5, ozone, and other pollutants that affect air quality across Wisconsin.
National Rankings
Compare Wisconsin cities to the rest of the US by air quality grade and median AQI.

All Cities in Wisconsin

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