[ADEQ Forecasts] ADEQ Daily Air Quality Forecast - Thursday, December 01, 2011

[forecasts@lists.azdeq.gov]

Health message for Wednesday, November 30: Unusually sensitive people
should consider limiting prolonged exertion outdoors.

Health message for Thursday, December 1: Unusually sensitive people
should consider limiting prolonged exertion outdoors.


Synopsis and Discussion
Not much change is expected with the forecasted weather system poised to
impact Arizona Thursday.  Breezy conditions will develop overnight
tonight with strongest winds forecasted between 5 and 8 am.  We'll also
see clouds increase as the day progresses with some showers possible
late Thursday evening (rain totals are still forecast to be very light).
A better chance is possible Saturday.  

The cold air will keep the highs in the low to mid 60s Thursday and
Friday, but as the system heads out, expect those highs to remain in the
upper 50s Saturday through Monday (lows in the mid 30s to low 40s).  

The winds will help to clear the air of the accumulated/trapped
pollution we've seen in recent days.  With the colder nights and
inversions likely returning over the weekend, expect to see a marked
increase in PM2.5 levels, primarily from an increase in Valley fireplace
activity.

Check back on Thursday for the more.  Until then, have a good day!
-J.Paul


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

For transportation alternatives:
www.valleymetro.org 


If you have any questions or comments regarding this forecast please
contact:

Arizona Department of Environmental Quality
Office of Communications
1110 W. Washington St., Phoenix, AZ 85007
(602) 771-2215
ms15@azdeq.gov