South Carolina Air Quality

Real-time AQI data and air quality trends for 473 cities across South Carolina.

Statewide Air Quality Overview

44
Average AQI
2373
Good Air Days
981
Moderate Days
Unhealthy Days
170
Highest AQI

Based on 2025 EPA data

Cleanest Air in South Carolina

1. St. StephenMedian AQI: 36
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2. SangareeMedian AQI: 36
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3. Bonneau BeachMedian AQI: 36
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4. JamestownMedian AQI: 36
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5. Moncks CornerMedian AQI: 36
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Most Polluted in South Carolina

1. PiedmontMedian AQI: 41
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2. ForestbrookMedian AQI: 41
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3. AynorMedian AQI: 41
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4. LorisMedian AQI: 41
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5. NorthlakeMedian AQI: 41
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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 South Carolina.
National Rankings
Compare South Carolina cities to the rest of the US by air quality grade and median AQI.

All Cities in South Carolina

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