Ohio Air Quality

Real-time AQI data and air quality trends for 1,253 cities across Ohio.

Statewide Air Quality Overview

43
Average AQI
6204
Good Air Days
3000
Moderate Days
Unhealthy Days
238
Highest AQI

Based on 2025 EPA data

Cleanest Air in Ohio

1. SummitvilleMedian AQI: 12
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2. SalinevilleMedian AQI: 12
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3. East PalestineMedian AQI: 12
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4. East LiverpoolMedian AQI: 12
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5. HomeworthMedian AQI: 12
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Most Polluted in Ohio

1. Bowling GreenMedian AQI: 39
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2. Sheffield LakeMedian AQI: 39
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3. North BaltimoreMedian AQI: 39
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4. Eaton EstatesMedian AQI: 39
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5. MillburyMedian AQI: 39
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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 Ohio.
National Rankings
Compare Ohio cities to the rest of the US by air quality grade and median AQI.

All Cities in Ohio

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