FORECAST SUMMARY: Thursday, September 29th, 2022, through Monday, October 3rd, 2022
OZONE: 8-hour Ozone concentrations will be in the Good range for the forecast period.
PM-2.5: 24-hour PM-2.5 concentrations will be in the Good to low-Moderate range for the forecast period.
FORECAST DISCUSSION:
High-pressure hangs around the region for much of the latter half of this week and into the weekend. Come Saturday afternoon, the current high-pressure exits the area which gives way to yet another high-pressure to our north in Ontario, Canada. The passing of these two pressure systems will allow clouds to come and go throughout the forecast period. The high-pressure entering the region on Saturday, somewhat forces a developing frontal boundary southward across Michigan Saturday evening into Sunday morning. The frontal boundary will have minimal impacts on weather and overall air quality. Due to the high-pressure regime this upcoming weekend, winds will predominantly be ENE with occasional shifts to southerly flow. With the intermittent sunshine, surface temperatures will eclipse the 70-degree mark in areas across Michigan this weekend.
In terms of air quality, Ozone concentrations will be of no concern during this forecast period mainly due to wind direction and seasonal surface temperatures. PM2.5 concentrations will overall be in the Good range but will have some hourly concentrations in the low-Moderate range. With high-pressure in place, morning hours will have little-to-no-wind which will allow for PM2.5 concentrations to increase. These concentrations will dissipate as the days carry on and winds increase due to surface warming.
EXTENDED FORECAST:
Going into next week, high-pressure continues to hang around which will allow for overall Good air quality.
Forecast updated by: Alec Kownacki
Next forecast update: Monday, October 3rd, 2022