AQI 55 · Ozone · Trend: Stable
| Average AQI | 55 |
| Good Days / Year | 195 |
| Unhealthy Days / Year | 12 |
| Primary Pollutant | Ozone |
| PM2.5 Average | 9.5 µg/m³ |
| Trend | → Stable |
| Monitoring Stations | 35 |
| Nonattainment Areas | 1 |
Louisiana's air quality is dominated by its massive petrochemical industry along the Mississippi River, known as Cancer Alley. Environmental justice concerns are significant as many low-income communities are surrounded by chemical plants. Lake Charles has a growing LNG export industry.
LDEQ (Louisiana Dept. of Environmental Quality) manages air quality. Cancer Alley communities have pushed for stricter industrial monitoring. Industrial emission permits are a major focus.
Baton Rouge — ozone nonattainment. The Mississippi River industrial corridor between Baton Rouge and New Orleans has the densest concentration of petrochemical plants in the US.