West Michigan Clean Air Coalition

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07/05/2022 Forecast Update

FORECAST SUMMARY: Tuesday July 5th, 2022, through Friday July 8th, 2022

OZONE: Ozone concentrations are expected to be in the Good to Moderate range throughout the forecast period.

PM-2.5: PM-2.5 concentrations are expected to range from Good to low-Moderate throughout the forecast period.

FORECAST DISCUSSION:

Many areas in Michigan woke up to rain and clouds this Tuesday morning with clouds looking to persist throughout the day today. In fact, there looks to be intermittent cloudiness throughout the entire forecast period, which is a change of pace from the relatively sunny skies Michigan had this past holiday weekend. A cold front slides in from the north today which will drop temperatures to the upper-70s to low-80s for the remainder of the week. The front will also shift winds from southwesterly flow to more easterly flow with intermittent northeast and southeast winds throughout the week. Dewpoint temperatures hang around the low-to-mid 60s for much of southern Michigan for the week which will initiate some potential rain showers Wednesday into Thursday, but those will be short-lived, if they even occur.

In terms of air quality, left over PM concentrations from 4th of July festivities are hanging around the area but as the front moves through, those concentrations are expected to clean out. According to some models, regional PM concentrations look to be present throughout the week, but those concentrations will be in the low-Moderate range. After a few days of relatively high Ozone this past weekend, ample clouds and easterly winds look to keep Ozone development at bay this week. Winds over Lake Michigan are expected to have a northerly component to them as well, so this will help hinder Ozone building up over the lake and reaching the west Michigan shoreline. Also, the frontal system coming through later today will help to clean out any concentration buildup. Due to the time of year and the potential for some sunlight peeking through this week, Ozone concentrations are expected to reach the Moderate range, however.

EXTENDED FORECAST:

A cold front looks to push through later this week and sets up a High-pressure system over the Great Lakes region for the weekend. Air quality concentrations look to remain in the Good to Moderate range.

Forecast updated by: Alec Kownacki, Tuesday July 5th, 2022
Next Forecast update: Friday July 8th, 2022