FORECAST SUMMARY: Monday, December 29, 2025 through Monday, January 5, 2026
PM-2.5: 24-hour average Fine Particulate concentrations are expected to be mostly Good (AQI Green) throughout the forecast period.
FORECAST DISCUSSION
Michiganders awoke to cold, blustery conditions as a deepening low over northern Michigan migrates eastward. Strong wrap-around winds behind the low will usher in snow showers, 20-degree temperatures, and wind gusts of 50+ mph. This is a big change from the 50-degree temperatures many areas in Lower Michigan experienced, on Sunday, during a brief time in the warm air sector of this passing low-pressure system.
For the remainder of the New Year’s week, a Canadian upper air low will support seasonally cold air across the Great Lakes region. A weak short wave clipper system will provide a good chance for light snow late Tuesday/Tuesday night, with light accumulation. A stronger short wave is projected to deliver a reinforcing short of arctic air Wednesday into New Year’s. Long range temperature projections do not have the thermometer breaking the freezing point anytime during this forecast period.
In terms of Air Quality, we begin the weekend with Good Air Quality, with the colder northwest winds, which should persist throughout the week.
EXTENDED FORECAST:
Air Quality is expected to remain mostly Good entering the upcoming post-holiday week.