FORECAST SUMMARY: Friday, June 9th, 2023, through Saturday, June 10th, 2023

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

PM-2.5: PM-2.5 concentrations are expected to be in the mid-high Moderate to USG range.

FORECAST DISCUSSION:

Winds start to shift throughout the day today as the weather pattern we have been under the past few days finally starts to change. Winds, which have been predominantly NNE this week, will shift to more NNW for today and eventually shift to more westerly later this evening into Saturday. The northerly component of the wind today will still pick up and bring wildfire smoke to the thumb region and southeastern parts of Michigan. The westerly component of the wind will help keep wildfire smoke concentrations out of the mid and western parts of the state. However, there may still be areas that see hourly USG concentrations the more west you go, but overall PM-2.5 concentrations should be in the Moderate range for mid and western parts of Michigan.

Winds tomorrow look to be mainly WSW which will help keep wildfire smoke out of the area for the time being. Some leftover PM-2.5 concentrations may still be in the area, but concentrations will be in the Good to Moderate range. Since winds will be WSW there is a chance of increased Ozone tomorrow, Saturday, for SW Michigan with some models showing hourly USG values. An air quality alert is not being planned for Ozone tomorrow, but this forecast will be updated and reevaluated tomorrow to look at updated models and forecasts.

EXTENDED FORECAST:

A change in weather pattern is upon us, with rain in the forecast for Sunday.

Forecast updated by: Alec Kownacki: Friday, June 9th, 2023

Next Forecast update: Saturday, June 10th, 2023