FORECAST SUMMARY: Friday August 26, 2022, through Monday August 29, 2022

OZONE: 8-hour average Ozone concentrations are expected to be Good to Moderate.

PM-2.5:  24-hour average Fine Particulate concentrations are expected to be stay mostly Good to Low Moderate.

FORECAST DISCUSSION

The Monday forecast was concerned with the potential for elevated ozone during the weekend.  That concern has been greatly reduced with the latest round of model runs.

Following an overnight frontal passage, Friday should provide clearing skies under northerly winds and Good Air Quality as high pressure moves over the state.  That trend should continue through Saturday with clear skies and pleasant weather. 

As the high pressure moves off during Sunday, we should see winds shift from southeast to southerly.  An advancing trough of low pressure will generate increasing cloudiness from west to east during the day.  With the shorter hours of sunlight, that should be enough to reduce the risk of elevated ozone although we will probably get into the Moderate range in Southeast Michigan. 

As that front continues to approach during Monday, showers and thunderstorms become more likely and the potential for heavy rains increase.  Air Quality should remain Good during this time.

EXTENDED FORECAST:

Air Quality should be mostly Good to Low Moderate to begin the next work week.

Forecast updated by Jim Haywood: Friday, August 26, 2022

Next forecast update: Monday, August 29, 2022