FORECAST SUMMARY: Friday, October 31, 2025 through Monday, November 3, 2025
PM-2.5: 24-hour average Fine Particulate concentrations are expected to be Good (AQI Green) to scattered Low Moderate (AQI Yellow).
FORECAST DISCUSSION
Today, October 31, marks the final day of the 2025 Ozone season. In recap, although it was a warmer summer, overall elevated ozone days were below normal.
As we enter November, we are at the time of year where Air Quality generally does not cause any problems. The current weather patterns are following seasonal normals with daily highs in the mid-50’s and nighttime lows in the 30’s. Precipitation amounts during the Fall months have also been pretty close to climatic normal.
This weekend will be no different. The upper-level low pressure cell, currently influencing the area and continuing to provide cloud cover, will continue lifting northeast across the lower Great Lakes today. Lake effect showers look to continue, especially for areas downwind of Lake Michigan in West Michigan.
Saturday remains cool as a low-pressure cell spins over southwest Michigan before being edged out by high-pressure ridging during Sunday. Monday will likely experience a fast-moving clipper system before high pressure builds back in during Tuesday.
Air Quality should not be an issue as fine particulate matter levels stay Good with a few scattered Low Moderates.
EXTENDED FORECAST:
Air Quality is expected to remain Good to Low Moderate entering the upcoming work week.