FORECAST SUMMARY: Monday, November 10, 2025 - Friday, November 14, 2025
PM-2.5: 24-hour daily average Fine Particulate concentrations will average mostly Good (Green AQI), with only a few Moderates (Yellow AQI) during the forecast period.
FORECAST DISCUSSION:
The first taste of winter arrived this past weekend as much of the state saw its first accumulating snowfall of the season. The snowfall happened as a disturbance passed through on Sunday. Strong north winds behind this system are creating lake effect snow, with more accumulations expected today, Monday, in the most prone north/northwest regions. Lake effect snow should taper off Tuesday as high pressure moving in switches winds to a south/southwesterly direction for a short time. Weak disturbances in the northwesterly upper-level flow, however, will keep small chances for precipitation through mid-week. Temperatures will be warm enough for the precipitation to fall mostly as rain.
As for air quality, northwesterly winds will keep fine particulate levels generally Good, aside from a low-Moderate average possible in the more urban locations. By Thursday, high pressure moves overhead, and wind speeds decrease. Daily fine particulate concentrations may reach the low-Moderate range from Thursday into Friday.
EXTENDED FORECAST:
Extended models show dry conditions through most of Saturday and high temperatures ranging in the 40s and 50s through the weekend. The next weather system could bring precipitation back into the forecast from late Saturday to Sunday. Currently, temperatures look to be warm enough for rain in lieu of snow. Air quality in the extended period is not expected to reach higher than the low Moderate range.
Next Forecast update: Friday, November 14, 2025