AQI 42 · PM2.5 · Trend: Improving
| Average AQI | 42 |
| Good Days / Year | 248 |
| Unhealthy Days / Year | 5 |
| Primary Pollutant | PM2.5 |
| PM2.5 Average | 7.2 µg/m³ |
| Trend | ↓ Improving |
| Monitoring Stations | 28 |
| Nonattainment Areas | 0 |
Wisconsin has good air quality, especially for a state with significant manufacturing. Lake Michigan moderates temperatures but can create inversions. The Fox Valley paper industry has modernized significantly, reducing emissions.
Wisconsin DNR Air Management Bureau manages standards. Vehicle emissions testing in southeast Wisconsin. Paper mill emission controls.
No current nonattainment areas. Wisconsin has made significant improvements through manufacturing modernization and coal plant retirements.