FORECAST SUMMARY: Tuesday, September 3, 2024, through Friday, September 6, 2024
OZONE:
8-Hour average Ozone concentrations will be Good (AQI Green) increasing to Moderate (AQI Yellow).
PM-2.5:
24-hour average Fine Particulate concentrations are expected to be mostly Good (AQI Green).
FORECAST DISCUSSION:
High pressure continues to slide overhead. This will keep our daytime weather summer-like warm and dry through Thursday. Chilly overnight temperatures, under clear skies, will also occur but will warm quickly during the first few hours of daylight underneath sunny skies. Afternoon high temperatures will increase, each day, climbing to the mid-80’s by Thursday as warm air advection keeps pumping in warmer air.
Air Quality from potential ozone development will range from Good, early in the week, to Moderate as the week progresses. Thursday will be the peak for the warming trend and Air Quality will likely degrade to the high Moderate range, by that time. But I am not seeing enough evidence to support any thoughts of an advisory at this point. I will be checking, however, and upgrade the Thursday forecast, if necessary.
A strong cold front will pass through the state early Friday morning. Pretty high confidence that daytime highs, during the weekend, will be down into 60’s with morning lows in the 40’s. Rain chances continue into Saturday with decreasing chances by Sunday. Air Quality will be Good following the passage of the cold front.
Wildfires continue in the western states and provinces. All smoke models agree that we should not see any impact at ground level although smoke high in the atmosphere is a possibility.
EXTENDED FORECAST:
Air Quality is expected to remain mostly Good going into the upcoming work week.
Next Forecast Update: Friday, September 6, 2024