FORECAST SUMMARY:
Friday, September 3rd, 2021, through Tuesday, September 7th, 2021
OZONE:
Ozone concentrations are expected to be mostly Good for much of Michigan with a slight chance of some hourly Moderate concentrations along the Lake Michigan shoreline.
PM-2.5:
PM-2.5 concentrations are expected to be mostly Good with some smoke entering the region from out west but should stay aloft in the upper-levels of the atmosphere.
FORECAST DISCUSSION:
Entering the holiday weekend, Michigan should experience a rather pleasant weekend to send off Summer. Upper-level temperatures will continue the trend of this past week with temperatures in the low-teens Celsius to single digits. It isn’t until Tuesday when we see a return of temperatures in the mid-to-upper teens Celsius. Going into Saturday, September 4th, winds will primarily be from the SSW before shifting to WNW for the remainder of the forecast period. This is due to a departing High-pressure system lifting off into Ontario to our east and an oncoming cold front.
Surface level temperatures will be more of the same from this past week with highs in the low-mid 70s Fahrenheit. Dew point temperature highs will be in the mid-upper 50s Fahrenheit, so a much different environment from where were just a few weeks ago. Today, Friday, and into Saturday, we will see SSE winds before they shift to more SSW winds going into Sunday. A slight cold front is expected to traverse the region Sunday which will then shift winds to a more NW flow going into Monday. This cold front will bring chances of rain to much of Michigan, but primarily to northern Michigan. It is because of these reasons that Ozone concentrations are expected to remain mostly Good for the holiday weekend. As mentioned above, PM-2.5 concentrations will be Good as well with upper-level smoke returning to the region. If anything, this smoke will provide colorful sunrises and sunsets, but is not expected to reach the surface.
EXTENDED FORECAST:
Going into next week, concentrations are expected to remain Good with high temperatures in the high-60s to low-70s Fahrenheit.
Forecast updated by: Alec Kownacki, Friday, September 3rd, 2021
Next Forecast update: Tuesday, September 7th, 2021