FORECAST SUMMARY:
Monday, October 25, 2021, through Monday, November 1, 2021
OZONE: Ozone concentrations are expected to be Good for Michigan this week.
PM: PM-2.5 concentrations are expected to be Good for Michigan this week.
FORECAST DISCUSSION:
Monday, October 25th is expected to be a literal wash as the majority of Michigan, with the exception of the Upper Peninsula, is expected to receive rain for much of the day.
Upper-level temperatures for this week are expected to hover around zero degrees Celsius with winds mainly from the NNE, with some SE flow Thursday. As we approach Tuesday early morning, the low-pressure system that is providing all of this rain will move off to the east. This will set up a high-pressure system which will move across Michigan Wednesday morning and track more southeastward.
Moving down to the surface, temperatures for this week will be around seasonal averages with the sun coming out mid-week due to the aforementioned high-pressure system. Surface winds this week will be similar to the upper levels with winds coming from the NNE for the majority of the week.
Air quality is forecasted to be Good for the week, as the Ozone season comes to an end. The combination of rain today, seasonal temperatures and NNE winds, both Ozone and PM-2.5 concentrations are expected to be Good. There is a slight possibility for pockets of low-Moderate PM-2.5 concentrations mid-week, but the overall 24-hour average is expected to remain Good.
EXTENDED FORECAST:
The extended forecast is more of the same with Good concentrations and seasonal temperatures.
Forecast updated by Alec Kownacki, Monday, October 25, 2021. Next forecast update: Monday, November 1, 2021.