FORECAST SUMMARY: Monday, September 26th, 2022, through Thursday, September 29th, 2022

OZONE: Ozone concentrations are expected to be in the Good range.

PM-2.5: PM-2.5 concentrations are expected to be in the Good range.

FORECAST DISCUSSION:

Fall has arrived in Michigan, and we will really feel the Fall-like weather for the beginning half of this week. A Low-pressure system drifted in over the weekend and is currently sitting to our northeast over Canada. Along with this low-pressure, an accompanied cold front is stationary over the Upper Peninsula currently as well. The low-pressure and cold front will essentially sit over the region until Wednesday morning as a High-pressure is expected to break the pattern and force the low-pressure out of the area. With the current system in place, general cloudiness and on and off rain is expected through Wednesday, but sunshine returns Thursday with the help of the aforementioned High-pressure system.

In terms of air quality, the cooler temperatures and general cloudiness will inhibit the production of Ozone across the region. Also, unfavorable winds predominantly from the NNW will keep Ozone development at bay. PM-2.5 is expected to be in Good category for the forecast period as smoke forecast models do not pick up on any near-surface smoke concentrations.

EXTENDED FORECAST:

Extended forecasts show that we will be under the influence of High-pressure for much of the weekend ahead. This will keep air quality conditions in the Good range.

Forecast updated by: Alec Kownacki

Next forecast update: Thursday September 29th, 2022