FORECAST SUMMARY: Friday May 23rd, 2025, through Tuesday May 27th, 2025
Ozone:
Ozone concentrations are expected to be in the Good range.
PM-2.5:
PM-2.5 concentrations are expected to be in the Good range.
FORECAST DISCUSSION:
After a week of rather subpar weather, conditions are looking onward and upward, especially in the temperature regime. The Low-pressure that was lingering around the Great Lakes this past week has moved off to the east which opened the door for a rather dominant High-pressure system to take its place. This system will stick around for the entirety of the holiday weekend and early next week. The center of the pressure system will dance between the western upper peninsula and northern Wisconsin, so winds from the north-northwest will be commonplace for the weekend ahead. Along with this, mostly sunny conditions will be present as well as light winds after today, Friday. Breezy conditions should be expected today as the two pressure systems become closer in proximity, producing the winds, before the Low-pressure completely moves out of the area. With the aid of the sun, surface temperatures slowly increase throughout the weekend with the 60s returning tomorrow, Saturday, and the mid-to-upper 60s returning to the Great Lakes come Sunday. The warmest day of the holiday weekend will be Monday with upper 60s throughout the state and the slow climb back into the 70s continues into next week.
For air quality, persistently Good air quality will stick around for the weekend due to cooler temperatures not initiating too much Ozone across the state. For PM-2.5, northerly winds will help to keep the air clean, but with lighter winds and stagnation at times, low-Moderate concentrations can be expected in the metro Detroit and Grand Rapids areas. Those low-Moderate concentrations will be on an hourly basis however, with the daily PM-2.5 average expected to be in the Good range.
EXTENDED FORECAST:
The slow climb back to the 70s and seasonal norms continues next week with a slight chance of rain. Air quality is expected to be in the Good to low-Moderate range.
Next Forecast update: Tuesday May 27th, 2025