FORECAST SUMMARY: Monday, December 8, 2025 - Friday, December 12, 2025
PM-2.5: 24-hour daily average Fine Particulate concentrations will average upper Good (Green AQI) to middle Moderate (Yellow AQI).
FORECAST DISCUSSION:
A couple of systems will bring precipitation to the state through Wednesday. The first clipper system moves northwest to southeast on Tuesday with chances for snow in northern and central locations, while mixed precipitation is possible further south. The second system quickly follows suit Wednesday. Much of the state will experience snow, but temperatures look to be warm enough in the south for liquid precipitation to start the event, changing to snow as temperatures fall. Cold air returns for the end of the week, along with the chance for scattered snow showers.
Air quality levels in the Good range on Monday may increase to the low-Moderate from Tuesday into Wednesday, especially across the southern portion of the lower Peninsula. Stronger northwest winds developing behind the Wednesday system will allow for Good fine particulate levels through Friday.
EXTENDED FORECAST:
Extended forecast models show a few more systems late in the forecast period that will keep cold air and snow showers in the forecast. Air quality levels late in the period are not expected to reach higher than low-Moderate.
Next Forecast update: Friday, December 12, 2025