FORECAST SUMMARY: Monday, May 11, 2026 through Friday, May 15, 2026
Ozone: 8-hour average Ozone Particulate concentrations are expected to be mostly Good (AQI Green) to scattered Low Moderate (AQI Yellow) throughout the forecast period.
PM-2.5: 24-hour average Fine Particulate concentrations are expected to be mostly Good (AQI Green) throughout the forecast period.
FORECAST DISCUSSION
Cooler than average temperatures will persist during the early portion of the week but will succumb to warming temperatures by the end of the week. One more really chilly night is on tap as a Canadian high-pressure cell remains in place with clear skies and light winds. There is a chance for frost/freeze conditions which could impact much of the state in rural areas.
As the Canadian high-pressure system departs to the east, increasing clouds during Tuesday morning will signal the arrival of a fast-moving clipper system which is projected to bring showers in by afternoon and lasting into early Wednesday.
High-pressure returns to the area on Thursday signaling the beginning of a warming period as winds return to a southerly component. By the weekend, we should see temperatures in the upper 70’s to low 80’s with the chance of scattered showers.
The cooler weather and favorable winds during most of the work week will keep Air Quality in the Good range. The warmer weather expected by the end of the week should allow for a creep into the ozone Low Moderate range with Fine Particulates staying mostly in the Good range.
EXTENDED FORECAST:
Air Quality is expected to be Good to Low Moderate entering the upcoming weekend.
Forecast updated by Jim Haywood: Monday, May 11, 2026
Next forecast update: Friday, May 15, 2026