FORECAST SUMMARY: Monday, July 29th, 2022 through Sunday July 31st, 2022
OZONE: Ozone concentrations are expected to range from Good to Moderate range for the weekend.
PM-2.5: PM-2.5 concentrations are expected to range from Good to low-Moderate for the weekend.
FORECAST DISCUSSION:
The clear skies and warm, summer temperatures that Michigan will see today, Friday, will continue through the weekend as a High-pressure system slides to the east through Indiana and Ohio.
Winds during the weekend will predominantly be WSW before shifting to more southerly flow come Sunday afternoon. Thanks to the aforementioned High-pressure, skies will be clear of clouds providing ample sunlight. Upper-level temperatures are expected to be in the low-to-mid teens C for the weekend with upper-level winds WSW, similar to the lower-levels. In terms of air quality, there will be regional PM-2.5 concentrations throughout the weekend, but 24-hour averages will remain in the Good to low-Moderate range. As we have seen this past week, light low-level winds in the morning hours will allow PM-2.5 concentrations to buildup, but as the day carries on, and winds pick up, those concentrations will diminish.
Ozone was not an issue at all this past week and that trend looks to continue through the weekend. Although surface winds look to shift back to more southwesterly flow later on Sunday, the relatively clean airmass we will have going into Sunday should not pose a threat for Ozone development. Rather, Sunday looks to be a ramp up day for Ozone with Monday potentially having high Ozone concentrations develop. It is for this reason that this forecast will be updated on Sunday to see if Monday poses a threat for Ozone.
EXTENDED FORECAST:
Hot temperatures return next week with SW winds potentially creating a conducive environment for Ozone development. PM-2.5 looks to continue its trend of Good to low-Moderate.
Forecast updated by: Alec Kownacki, Friday July 29th, 2022
Next Forecast update: Sunday July 31st, 2022