[ADEQ Forecasts] ADEQ Daily Air Quality Forecast For Saturday, January 24, 2009

[forecasts@lists.azdeq.gov]

For more information, please visit our Web page:
http://www.azdeq.gov/ensemble.pdf

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http://www.valleymetro.org

Health message for Friday January 23: No health impacts are expected.

Health message for Saturday January 24: No health impacts are expected. 

Synopsis and Discussion
On and off showers will continue Friday afternoon through early Saturday.  A large area of low pressure continues to spin off the coast of southern California, pumping moisture into the state.  There will be a little clearing on Saturday and Sunday, with afternoon desert temperatures hovering around 70°F.  Last night's model run took the significant rain scheduled for Monday out of the forecast.  Instead, we are looking at a slightly less significant event starting early Tuesday and lasting through Thursday morning.  Total accumulations in the Phoenix forecast area will be between a half to one inch, more in the mountainous areas north and east of the Valley.   

All of this increased moisture has done a great job in clearing the air somewhat.  On Thursday, all pollutants dropped well into the "Good" range.  They'll likely remain there through the weekend.  We could see PM-2.5 creep into the lower "Moderate" range by Monday, but drop once again with the next bout of rain.  Check back on Sunday for the latest on next week's weather and air quality.  Until then, have a great weekend!

If you have any questions or comments regarding this forecast please contact:
The Arizona Department of Environmental Quality
Office of Communications
1110 W Washington St, Phoenix, AZ 85007
(602) 771-4583 
communications@azdeq.gov