AQI 52 · Ozone · Trend: Improving
| Average AQI | 52 |
| Good Days / Year | 205 |
| Unhealthy Days / Year | 10 |
| Primary Pollutant | Ozone |
| PM2.5 Average | 9.2 µg/m³ |
| Trend | ↓ Improving |
| Monitoring Stations | 32 |
| Nonattainment Areas | 0 |
Tennessee's air quality has improved significantly as TVA retires coal plants. Nashville's rapid growth is increasing vehicle emissions. The Great Smoky Mountains' famous haze has noticeably improved in recent years.
TN DEC Division of Air Pollution Control manages standards. Vehicle emissions testing in urban counties. TVA plant retirement plans improve forecast.
No current nonattainment areas, but historically Knoxville and Nashville have been borderline. Great Smoky Mountains visibility has improved significantly.