FORECAST SUMMARY:

Monday, August 31st, 2020 through Tuesday, September 8th, 2020

OZONE: 8-Hour average Ozone concentrations will be a mixture of Good and Moderate through the forecast period.  

PM-2.5:  24-hour average Fine Particulate concentrations will be mostly Good.

FORECAST DISCUSSION:

Last week, we issued what we optimistically hope to be the last Action Day Advisory for 2020.  That forecast, for Wednesday, proved to be accurate as four monitors on the West Side did cross into the USG range.

This week should be cleaner and easier to forecast as we head into the Labor Day weekend.  Temperatures will be more typical for this time of year with daily highs around 80 degrees. 

During Monday, high pressure will exit the area with a frontal passage expected Tuesday morning.  Clouds and precipitation are expected Tuesday and Wednesday as a result of this passage.  Thursday is showing strong southwest winds in advance of another front.  But the short duration of these winds and daytime high temperatures only around 80 should keep things no worse than Moderate.

The holiday weekend looks mostly dry with seasonal temperatures until a strong front pushes through during Sunday afternoon.  Cooler temperatures are expected for the beginning of next week.

Right now, it looks safe to forecast through the weekend and Monday holiday.  However, if conditions change, we will revise this forecast, as necessary.

EXTENDED FORECAST:

Air Quality should be mostly Good going into next week.

Forecast updated by Jim Haywood: Monday, August 31st, 2020
Next forecast update: Tuesday, September 8th, 2020