FORECAST SUMMARY: Friday, January 10, 2025, through Monday, January 13, 2025

OZONE:

The 2025 ozone season will begin on March 1st.

 PM-2.5:

PM-2.5 concentrations are expected to be in the Good to low-Moderate range.

FORECAST DISCUSSION:

We enter the middle of January with scattered winter weather advisories and a few winter storm warnings across the state due to expected lake effect snow today, Monday, and into Tuesday. A Low-pressure system will be moving towards the east over Lake Superior today which will initiate lake effect snow bands via west-northwesterly winds. These lake effect bands will intermittently impact snowbelt areas along with some inland areas in mid-Michigan. As we approach midweek, the aforementioned Low-pressure system is out of the Great Lakes region and a High-pressure system appears to set up over Lake Superior providing potential sunshine for the Great Lakes. Michigan will see rather calm conditions most of Wednesday and into Thursday before another system approaches Friday and into the weekend which may pose some snow totals for southern Michigan.

Air quality is looking to remain in the Good to low-Moderate range with more populated areas like Detroit and Grand Rapids seeing the bulk of Moderate concentrations. Morning commutes and potential atmospheric inversions will cause PM-2.5 concentrations to increase into the low-Moderate category, only for a few hours, however. With the numerous weather systems impacting Michigan this week, concentrations will be cleaned out about every other day.

EXTENDED FORECAST:

The coldest air of the season will be brought into the Midwest this upcoming weekend by a cold front and the ever-looming Polar Vortex. Air quality will remain in the Good range.

Next Forecast Update: Friday, January 17, 2025