Model Performance

---

Last updated Jan 12, 2026 10:59 CST

PM2.5 data

Observations and model forecasts are shown in AQI units. MPCA forecasts shown for Tuesday through Saturday have numeric values and are Day 1 forecasts. Sunday and Monday forecasts are typically only categorical and are Day 2 for Sunday and Day 3 for Monday.

Ozone data

Observations and model forecasts are shown in AQI units. MPCA forecasts shown for Tuesday through Saturday have numeric values and are Day 1 forecasts. Sunday and Monday forecasts are typically only categorical and are Day 2 for Sunday and Day 3 for Monday.