FORECAST SUMMARY: Monday, December 16, 2024, through Friday, December 20, 2024

OZONE:

November marks the end of the 2024 ozone season. The 2025 ozone season will begin on March 1st.

 PM-2.5:

24-hour average Fine Particulate concentrations are expected to be a mix of Good (AQI Green) and Low Moderate (AQI Yellow) for the entire forecast period.

FORECAST DISCUSSION:

As the shortest days of the year descend upon us, what little potential sum we could see will continue to elude Michigan.  While skies will continue to be gray and gloomy, I do not see any major winter systems impacting the state during the work week.  That said, weather will remain somewhat unsettled through the week as a series of low pressure shortwaves track across the northern U.S. 

 Monday will likely be the warmest day of the forecast period with temperatures reaching as high as the upper 40’s.  On Wednesday there may be some light snow accumulation ranging between a dusting and a couple inches of snow.  There is a higher potential for minor impacts from some accumulating snow late Thursday into Friday as a more developed system tracks through the region followed by colder weekend weather and more lake-effect snow potential.

 While the current weather can be classified as “blah”, Air Quality will be generally Good with some Low Moderates persisting, especially in the southern portion of the state.

  EXTENDED FORECAST:

Air Quality is expected to remain Good to Low Moderate going into the weekend.

Next Forecast Update: Friday, December 20th, 2024