FORECAST SUMMARY: Monday, December 30, 2024, through Friday, January 3, 2025
OZONE:
November marks the end of the 2024 ozone season. The 2025 ozone season will begin on March 1st.
PM-2.5:
24-hour daily average Fine Particulate concentrations will average mostly Good (Green AQI) with only scattered Moderate (Yellow AQI) levels through the period.
FORECAST DISCUSSION:
This forecast period starts with quiet conditions Monday as the storm system that brought a soaking rain on Sunday pulls east of the region. The next storm system is quickly approaching, however, and will be tracking through the Ohio River Valley later Tuesday, then off to the northeastern U.S. on Wednesday. As this system passes to our south, chances for snow move in as well. What will be most noticeable on the first day of 2025 will be the cold temperatures moving in on a strong northwesterly wind. You can expect the cold temperatures, along with lake effect snows, to linger into the beginning days of 2025.
As for air quality, levels are starting from a clean base with mostly Good readings across the state. With lighter winds Tuesday, fine particulate may increase into the low Moderate range at a few southern monitors. Past Tuesday, northwesterly winds will be in place across the region, and this flow will keep air quality readings in the Good range the rest of the week.
EXTENDED FORECAST:
EXTENDED FORECAST:
Extended forecast models show cold temperatures and lake effect snows lingering into the first weekend of 2025. If this forecast pans out, Good air quality will continue.
Next Forecast Update: Friday, January 3, 2025