FORECAST SUMMARY: Monday, September 16, 2024, through Friday, September 20, 2024
OZONE:
Ozone concentrations are expected to range between Good (Green AQI) and Moderate (Yellow AQI).
PM-2.5:
PM-2.5 concentrations will average between Good and Moderate.
FORECAST DISCUSSION:
The weather conditions this week will primarily be a repeat of last week across Michigan. The forecast features unseasonably warm “summer-like” temperatures and generally dry conditions. With high pressure settled to our east most of the week, a continued east/southeasterly wind flow should keep pollution levels from increasing much over the region. Also to note is that wildfire smoke is present at upper levels through at least mid-week; however, ground-level impacts are not anticipated. Levels of both pollutants should remain steady in the upper Good to middle Moderate range through the period.
As mentioned, the “summer-like” conditions continue this week, but an increase in cloud cover may be noticed later in the period, along with a slight decrease in high temperatures. This change in conditions will depend on the track of a storm system that is forecast to come onshore over the Carolinas today (Monday). The most recent forecast guidance keeps this storm system south and east of the region after it comes inland.
AQD meteorologists will keep an eye on the weather and air quality conditions through the week, and this forecast will be updated if the current forecast trend changes, and we expect increases in pollution levels from the current upper Good to middle Moderate forecast.
EXTENDED FORECAST:
Extended forecast models show the warm, dry conditions continuing, along with the general trend of Moderate pollution levels.
Next Forecast Update: Friday, September 20th, 2024