FORECAST SUMMARY: Friday, April 18, 2025, through Monday, April 21, 2025
Ozone: 8-hour ozone concentrations are expected to average Good (Green AQI) through the period.
PM-2.5: 24-hour daily average Fine Particulate concentrations will range between Good (Green AQI) to low Moderate (Yellow AQI).
FORECAST DISCUSSION:
A storm system moving through Friday will bring periods of showers and storms as it tracks through. Some of the storms could be strong, so it’s something you may want to keep an eye on. High pressure then slides in on Saturday; however, the next system moves into the region on Sunday, bringing showers back into the forecast on Easter. Southwest winds across lower Michigan on Friday allow temperatures to reach the mid-60s to mid-70s, but readings will fall into the 50s to 60s on Saturday as northwest winds develop. Further north, temperatures are expected to range in the 50s on Friday and then into the 40-to-50-degree range during the weekend.
As for air quality, the period begins with a mix of Good to low Moderate fine particulate levels and Good ozone readings. These concentrations will continue Friday, and an improvement to all Good is expected Saturday as northwest winds kick in. Mostly Good air quality levels are expected to linger through the coming weekend, with only a chance for low-Moderate fine particulate in the south early next week.
EXTENDED FORECAST:
The extended weather models show precipitation continuing Monday, but dry weather returns on Tuesday. Temperatures will be cooler early in the week, but milder conditions are forecast by mid-week. Pollution levels early next week will average Good for ozone and a mix of Good to low-Moderate for fine particulate.
Next Forecast update: Monday, April 21, 2025