FORECAST SUMMARY: Monday, April 20, 2026 through Friday, April 24, 2026
Ozone: 8-hour average Ozone Particulate concentrations are expected to be Good (AQI Green) throughout the forecast period.
PM-2.5: 24-hour average Fine Particulate concentrations are also expected to be mostly Good (AQI Green) to scattered Moderate (AQI Yellow) throughout the forecast period.
FORECAST DISCUSSION
After all the wet and stormy weather which has plagued most of April to this point, Michigan is in for a much quieter and tranquil week with a chance to begin drying out. Monday did start out rather cold (i.e. multiple freeze warnings) but should rebound by mid-week. Southwesterly flow returns on Tuesday and that will mark the beginning of milder and less dry air.
The warmest temperatures should arrive by Wednesday with Thursday likely the warmest day of the week with temperatures in the mid-70’s. Light northeasterly winds on Wednesday should keep Air Quality in the Good range but winds shifting more southerly by Thursday could result in scattered Moderate conditions. Fortunately, with the heavy winter snowpack to our north, wildfires are yet to become a concern. Only small, controlled fires are currently reported in the far western Provinces.
Mostly sunny skies during Wednesday and Thursday should provide a good opportunity for drying out and high river levels to begin dropping. A weak cold front is projected to move through Michigan on Friday bringing a chance of showers and thunderstorms.
Generally, mostly Good Air Quality is expected throughout the state with only a chance of scattered Moderates during mid-week.
EXTENDED FORECAST:
Air Quality is expected to continue to be mostly Good entering the upcoming weekend.
Forecast updated by Jim Haywood: Monday, April 20, 2026