Maryland Air Quality

Real-time AQI data and air quality trends for 532 cities across Maryland.

Statewide Air Quality Overview

40
Average AQI
3479
Good Air Days
707
Moderate Days
Unhealthy Days
143
Highest AQI

Based on 2025 EPA data

Cleanest Air in Maryland

1. SavageMedian AQI: 36
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2. HighlandMedian AQI: 36
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3. ElkridgeMedian AQI: 36
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4. LisbonMedian AQI: 36
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5. IlchesterMedian AQI: 36
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Most Polluted in Maryland

1. ChestertownMedian AQI: 40
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2. RivaMedian AQI: 40
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3. SevernMedian AQI: 40
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4. Shady SideMedian AQI: 40
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5. PomfretMedian AQI: 38
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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 Maryland.
National Rankings
Compare Maryland cities to the rest of the US by air quality grade and median AQI.

All Cities in Maryland

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