FORECAST SUMMARY: Monday October 4th, 2021, through Monday October 11th, 2021
Ozone: 8-hour average Ozone concentrations are expected to be mostly Good.
PM-2.5: 24-hour average Fine Particulate concentrations are expected to range from Good to Low Moderate.
FORECAST DISCUSSION
A low-pressure center is moving across lower Michigan Monday that has kicked off some heavy rain shower activity during the morning hours. That activity will diminish as the low tracks southeastward during the day. Air Quality will remain Good during Monday.
Dryer conditions will return Tuesday through Wednesday following the passage of the Monday system. Air Quality will remain mostly Good on mostly on northeast to easterly winds.
By Wednesday night, a low-pressure system to our south is predicted to merge with an oncoming Pacific system and slowly move north into the Midwest. This will likely kick off more clouds and showers and keep Air Quality mostly Good.
Temperatures are likely to warm up during the weekend as a stronger system pushes up from the southwest. During the advance of that system, we will be in the warm air sector during Saturday and early Sunday and can expect temperatures in the mid-70’s before that system passes late Sunday. During that time, it is possible to see some Moderate conditions.
Fortunately, our ozone season is winding down and we really do not expect to see much in the way of elevated ozone. Wildfires have also diminished which added much smoke to our air during the summer months. Some fires still burn in Manitoba and out in the Western U.S., but current smoke plumes do not seem to be getting east of Minnesota.
EXTENDED FORECAST:
Air Quality is expected to be Good to Moderate during the weekend. Monday and early next week will be Good Air Quality.
Forecast updated by Jim Haywood: Monday, October 4th, 2021
Next forecast update: Monday, October 11th, 2021