FORECAST SUMMARY: Friday, November 5th, 2021, through Monday, November 8th, 2021

PM-2.5: 24-hour average Fine Particulate readings will range from upper Good to middle Moderate.

FORECAST DISCUSSION:

Cold temperatures and lake effect rain/snow showers earlier in the week will be replaced by dry conditions, sunshine, and warming temperatures. This change can be attributed to high pressure dominating our weather. The center of the high is near southeast Michigan early Friday and this system lingers southeast of our region through early next week. With this set up, expect warmer, southwesterly winds as high temperatures increase each day. The warmest readings can be expected Sunday and Monday.

As for air quality, weak winds Friday morning in southern Michigan has caused increased hourly fine particulate readings in the high Moderate to low USG range. However, as winds increase during the day hourly levels should improve. Daily fine particulate averages will range between upper Good and upper Moderate Friday. Warmer southwesterly winds continuing this weekend will keep increased fine particulate in the forecast, but stronger winds Saturday and Sunday, especially closer to the lakeshore, should hamper a significant development. I am anticipating mostly Moderate fine particulate across the state during the weekend into early next week.

EXTENDED FORECAST:

Extended models show a weak boundary moving through Tuesday. Not much precipitation is associated with it, but winds switching to the northwest will help improve Moderate fine particulate levels.

Next Forecast update: Monday, November 8th, 2021