FORECAST SUMMARY: Monday June 9th, 2025, through Tuesday June 10th, 2025
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 Moderate range.
FORECAST DISCUSSION:
As we get into the second week of June, we are continuing to look at wildfire smoke impacts not only across Michigan, but across the Great Lakes as well. This past weekend saw lingering smoke across southern Michigan with metro Detroit seeing most of the smoke Saturday and into Sunday evening. A cold front came through late Sunday night and helped to wash out the USG level PM-2.5 and smoke concentrations. This Monday morning presents us with statewide Moderate concentrations with another frontal boundary expected to cross over us later today. Looking to our west over Minnesota and Wisconsin, concentrations are a mixed bag of Good to Moderate, but great improvements overall, nonetheless, compared to this past weekend and last week. Ideally, with the passage of the forthcoming front, we will drop down into the Good range for PM-2.5. However, some models are showing additional smoke dropping down into the upper peninsula tomorrow, Tuesday, while other guidance are not picking up on the smoke at all. With the experience we have gained with this last episode with some models performing well, while others did not, I will be looking at and updating this forecast Tuesday morning. Also, Ozone may become an issue come Wednesday with clearing skies and warming temperatures. Residual smoke near the surface may help to enhance Ozone development in the more populated areas.
EXTENDED FORECAST:
Consistently warm temperatures look to hang around and stay as we get into the second week of June. Additional rain showers linger around this week, but nothing to cause a washout. Air quality will be monitored each day this week with hopes of additional rain and fronts cleaning out our current airmass.
Next Forecast update: Tuesday June 10th 2025