FORECAST SUMMARY: Friday October 17th, 2025, through Monday October 20th, 2025
Ozone:
Ozone concentrations are expected to be in the Good (Green AQI) range.
PM-2.5:
PM-2.5 concentrations are expected to be in the Good (Green AQI) to low-Moderate (Yellow AQI) range.
FORECAST DISCUSSION:
After numerous weekends of picture-perfect, above normal Fall weekends, us Michiganders are in store for a rather opposite weekend ahead: rainy and windy. Some areas in the north will see rain tapering off this Friday afternoon with a clear evening for most of us. Come Saturday, however, the majority of the Great Lakes region will be impacted by a Low-pressure system making its way into the area, which will be influencing our day-to-day for the remainder of the weekend. A quick-hitting warm front will move through the area early Saturday morning which will provide above-normal temperatures during the day on Saturday, before temperatures drop come Saturday evening with a trailing cold front. In between the two fronts, rain will be hit or miss in most areas with wind gusts increasing throughout Saturday afternoon and evening. Come Sunday, the ‘Gales of November’ look to come early as the Low-pressure system moves over top of Michigan providing gusty conditions across the Great Lakes. This is due, in part, to the aforementioned Low-pressure system and a High-pressure system out to the east, so the pressure gradient will be sandwiched between the two, causing the windy conditions. With the Low-pressure over us on Sunday, persistent rain across the state, coupled with windy conditions, will make for a great inside-kind-of-day.
For air quality, Good concentrations are expected throughout the weekend with Ozone not being a threat due to cloudy conditions and cooler temperatures. The windy conditions will also help to keep PM-2.5 concentrations in the Good range due to ample dispersion and a clean air mass.
EXTENDED FORECAST:
Breezy conditions continue into next week with a slight increase in temperatures before dropping down to seasonal norms. Air quality will remain in the Good range.
Next Forecast update: Monday October 20th, 2025