FORECAST SUMMARY: Friday September 22nd, 2023, through Monday September 25th 2023

Ozone: Ozone concentrations are expected to be in the Good to Moderate range.

PM-2.5: PM-2.5 concentrations are expected to be in the Good to low-Moderate range.

FORECAST DISCUSSION: After a week of relatively picturesque weather conditions, we can expect much of the same for this picture-perfect weekend ahead for us Michiganders. High-pressure is still dominating the area with the High-pressure system sitting over central Ontario currently and is expected to stay there through the weekend. This will result in winds being predominantly easterly with some northerly component shifting the direction throughout the weekend. A warming pattern that we saw to end the work week continues into the weekend with surface temperatures well into the 70s for much of Michigan and the region.

For air quality, relatively light surface winds in the morning hours may result in PM-2.5 concentrations to build up in more populated areas. Per usual, as the day carries on, and winds increase, those concentration will decrease. Ozone will not have the required ingredients to produce high concentrations. There may be Moderate Ozone sprinkled across the state, which was seen this past week, but nothing over mid-Moderate should be expected.

EXTENDED FORECAST: The current weather pattern looks to continue into next week, with cooler temperatures expected. Overall air quality is expected to remain Good.

Next Forecast Update: Monday September 25th, 2023