FORECAST SUMMARY: Monday, October 27, 2025 through Friday, October 31, 2025
OZONE: 8-hour average Ozone concentrations are expected to be Good (AQI Green).
PM-2.5: 24-hour average Fine Particulate concentrations are expected to be Good (AQI Green) to scattered Low Moderate (AQI Yellow).
FORECAST DISCUSSION
As we wind up October, we also wind up the 2025 Ozone season. In recap, although it was a warmer summer, elevated ozone days were below normal. A good thing! The wildfire season certainly gave us fits, so it was nice to have a relatively good ozone season.
We are at the time of year where Air Quality generally does not cause any problems. Ozone season is ending, and Canadian wildfires are in retreat. Weather patterns can still be active, however, and hurricane season is still raging in the Caribbean.
The weather for this week is expected to be seasonal and mostly dry for the first half of the week. A retreating high-pressure system is giving way to an approaching low-pressure system predicted to move up the Mississippi/Ohio River valleys later in the week.
The retreating high-pressure will continue to provide clear skies through Wednesday as the low-pressure system drives northeast through the Mississippi/Ohio River valleys. Being sandwiched between the high-pressure and low-pressure cells will give us brisk easterly winds through much of the early half of the week. As the low-pressure cell passes beneath us later in the week, we will have the best shot at some Halloween precipitation although not predicted to be heavy.
EXTENDED FORECAST:
Air Quality is expected to remain Good to Low Moderate entering the upcoming work week.