FORECAST SUMMARY:
Tuesday, June 1st, 2021 through Thursday, June 3rd, 2021
Ozone: 8-hour average Ozone concentrations are expected to be mostly Good to Moderate through the forecast period.
PM-2.5: 24-hour average Fine Particulate concentrations will be in the upper Good and middle Moderate range.
FORECAST DISCUSSION:
High-pressure Tuesday will keep quiet conditions in place. Light winds, temperatures in the 70s, and plenty of sunshine allow for some Moderate ozone and/or fine particulate. A trough moving in Wednesday brings clouds and precipitation changes to parts of the state. This system keeps ozone from increasing, and readings should range from Good to low Moderate both Wednesday and Thursday. Fine particulate is expected to continue in the Good to low Moderate range.
After Thursday, surface high pressure will be the dominating factor and upper-level ridging will build in for the weekend. Warm air advection with increasing temperatures both at the surface and upper levels can be expected. The question mark is a convective potential late in the week. If conditions remain dry and sunny, ozone may be increasing as we move towards the weekend. Because the threat for higher ozone begins Friday, we will be updating this forecast Thursday to evaluate the need for any Air Quality Action Days.
EXTENDED FORECAST:
Extended forecast models show increased temperatures lasting through the weekend. If dry conditions also remain the trend, we will be updating the forecast daily as we move through the period.
Forecast updated by Stephanie Hengesbach: Tuesday, June 1st, 2021
Next forecast update: Thursday, June 3rd, 2021