Dust Risk-Based Forecast | Pinal County

Tuesday

Stagnation: No stagnation

Wind: South to southwest 5-15 mph, gusts 20-25 mph, diminishing late

Wednesday

Stagnation: No stagnation

Wind: South to southwest eventually becoming west 10-20 mph, gusts 30-35 mph, diminishing late

Thursday

Stagnation: No stagnation

Wind: Light becoming north to northwest 5-10 mph

Friday

Stagnation: Light stagnation

Wind: Light becoming northwest 5-10 mph

Saturday

Stagnation: Light stagnation

Wind: Light becoming northwest to west 4-9 mph

Forecast Discussion:

Unsettled weather is in store for the local area this week as an upper level low pressure system currently over the north-central California coast will eventually reach the state by Wednesday. The afternoons prior to will be breezy and some spotty blowing dust is possible, though the daily PM10 averages are expected to be in the good to low range of the good to moderate AQI categories (i.e. low dust risk). Hidden Valley will have its usual early morning elevated PM10 levels, though the daily averages will be in the low moderate AQI category (i.e. low dust risk). Wednesday's arrival of the upper low and its associated gusty winds and rain are the big question for the dust risk. At this point, some blowing dust prior to the showers is expected, however the forecasted highest daily averages are in the middle of the moderate AQI category and so remain in the low dust risk. However that is subject to change and so check back tomorrow for an updated dust risk forecast.

- S.DiBiase
Pinal County Air Quality Meteorologist