Maricopa County Forecast
Risk Scale
Air Quality Dust RiskISSUED ON: Fri. Nov 24, 2017
This report is updated Monday through Friday and is valid for Maricopa County, Arizona
Saturday 11/25/2017

MODERATE
Winds:Light and variable winds.
Stagnation:Morning and overnight stagnation.
Sunday 11/26/2017

LOW
Winds:Light westerly winds.
Stagnation:Morning and overnight stagnation.
Monday 11/27/2017

MODERATE
Winds:Southwesterly winds 10-15 mph gusting over 20 mph in the afternoon.
Stagnation:Morning stagnation.
Tuesday 11/28/2017

LOW
Winds:Northerly winds 5-10 mph,
Stagnation:Morning and overnight stagnation.
Wednesday 11/29/2017

LOW
Winds:Light northerly winds.
Stagnation:Morning and overnight stagnation.


Synopsis & Discussion
Forecaster: -R. Nicoll
Dust levels in the atmosphere have improved since yesterday. We expect to continue seeing some improvement through the weekend, and as a result we have decreased the dust risk to Low on Sunday. Monday will have the main dust concern. A trough will be pushing through the region, which may be enough to kick up some dust down in southeastern California/southwestern Arizona and drift the dust over central Arizona. As a result, it is possible that Monday will be a hazy day here in the Valley. Therefore, we have a Moderate dust risk in place for Monday. On Tuesday and Wednesday ventilation looks decent enough due to the exiting trough to lower the dust risk back into the Low category. Check back on Monday for the next update. Until then, have a great Thanksgiving Day weekend!
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