FORECAST SUMMARY: Friday, May 16, 2025, through Monday, May 19, 2025
OZONE: 8-hour average Ozone concentrations are expected to range between Good (AQI Green) and Low Moderate (AQI Yellow) during Friday, then mostly Good (AQI Green) for the remainder of the weekend.
PM-2.5: 24-hour average Fine Particulate concentrations are also expected to range between Good (AQI Green) to Low Moderate (AQI Yellow) through the forecast period.
FORECAST DISCUSSION
After the hard-hitting storms rolled through Thursday evening, Friday will be calm with sunny skies and breezy, warm temperatures. It will end, Friday evening, when a second batch of storms arrives associated with a cold front currently tracking across the Michigan Upper Peninsula. I do not expect that these storms will be as robust as the Thursday evening storms, but there could be some decent thunderstorms associated with this passage. Friday’s Air Quality should be a mix of Good and Low Moderate.
Cooler weather, with a chance of showers, is on tap for Saturday with temperatures struggling to reach 60 degrees under breezy conditions. Air Quality should be a mix of Good and Low Moderate but mostly Good.
A Canadian high pressure system builds in, during Sunday, with fair weather for the remainder of the weekend and into early next week. Cooler weather remains with daily highs in the 60’s and potentially scattered frost with lows in the 30’s across the northern zones of the forecast region. Air Quality should be mostly Good.
EXTENDED FORECAST:
Air Quality is expected to continue being mostly Good going into the upcoming work week.
Next forecast update: Monday, May 19, 2025