Louisiana Air Quality

Real-time AQI data and air quality trends for 489 cities across Louisiana.

Statewide Air Quality Overview

41
Average AQI
3947
Good Air Days
1391
Moderate Days
Unhealthy Days
115
Highest AQI

Based on 2025 EPA data

Cleanest Air in Louisiana

1. LemannvilleMedian AQI: 33
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2. DonaldsonvilleMedian AQI: 33
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3. GonzalesMedian AQI: 33
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4. PrairievilleMedian AQI: 33
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5. DarrowMedian AQI: 33
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Most Polluted in Louisiana

1. Amite CityMedian AQI: 38
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2. CadeMedian AQI: 36
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3. HendersonMedian AQI: 36
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4. CatahoulaMedian AQI: 36
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5. CeciliaMedian AQI: 36
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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 Louisiana.
National Rankings
Compare Louisiana cities to the rest of the US by air quality grade and median AQI.

All Cities in Louisiana

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