FORECAST SUMMARY:
Tuesday, September 8th, 2020 through Monday, September 14th, 2020
OZONE: 8-hour average Ozone concentrations are expected to be mostly Good through the forecast period.
PM-2.5: 24-hour average Fine Particulate concentrations will be generally Good.
FORECAST DISCUSSION:
A frontal boundary stalled south of the state will keep cool temperatures and showers/storms in the forecast through mid-week. High pressure sinking in from the north Thursday should dry conditions out, lasting through part of Saturday. However, another system brings precipitation back in the forecast late in the weekend.
With a primarily cool/cloudy pattern this week, and northeasterly winds, air quality is anticipated to be Good for both ozone and fine particulate. As high-pressure slides in Thursday, clouds will decrease during the day with more in the way of sunshine Friday and early Saturday. Temperatures at the surface and upper levels, though, should keep ozone generally Good while fine particulate may reach low Moderate in the southeastern part of the state.
EXTENDED FORECAST:
Extended forecast models show a system moving through late Saturday into Sunday with high pressure returning Monday. Clouds/precipitation should keep air quality Good Sunday and northerly winds by Monday will continue the Good air quality trend into early next week.
Forecast Updated By Stephanie M. Hengesbach September 8th, 2020
Next forecast update: Monday, September 14th, 2020