Dust Risk-Based Forecast | Pinal County

Saturday

Stagnation: Light stagnation

Wind: Light becoming west 4-9 mph

Sunday

Stagnation: Light stagnation

Wind: Light becoming west 3-8 mph

Monday

Stagnation: Light stagnation

Wind: Light becoming west to northwest 5-12 mph

Tuesday

Stagnation: Light stagnation

Wind: Light becoming west to northwest 5-12 mph

Wednesday

Stagnation: Light stagnation

Wind: Light winds

Forecast Discussion:

A cold front passing through today will help the temperatures drop into more seasonal ranges this weekend. Dry conditions are forecast to continue for the foreseeable future which is typical for this area this time of year. Unfortunately that won't bode well in the long term for the PM10 levels as they are expected to rise and Hidden Valley will eventually (middle to end of next week) be posing a daily challenge to the PM10 health standard. The other PM10 monitoring locations will be in the good AQI category with Stanfield expected to reach low and perhaps mid-moderate ranges over the next several days. Additionally San Tan Valley is forecast to reach low moderates next week. The dust risk forecasts are the following, moderate risk on Saturday due to the early morning conditions at Hidden Valley, low dust risks Sunday and Monday due to less favorable early morning conditions at Hidden Valley. The more favorable early morning conditions at Hidden Valley are expected to return for Tuesday and Wednesday, so moderate dust risks. Check back Monday for an updated dust risk forecast.

- S.DiBiase
Pinal County Air Quality Meteorologist