[ADEQ Forecasts] ADEQ Daily Air Quality Forecast - Wednesday, March 30, 2011

[forecasts@lists.azdeq.gov]

Health message for Tuesday March 29: Unusually sensitive people should
consider reducing prolonged or heavy exertion outdoors.

Health message for Wednesday March 30: No health impacts are expected. 
 

Synopsis and Discussion
OZONE:  As of 11:00 a.m. local hourly ozone concentrations were running
as much as 10 parts per billion higher at some sites over the same time
on Monday. A strong ridge aloft from the Pacific will begin building
over the metro area on Wednesday.  As it does so a trough will brush by
the area to the east and the gradient between the two will bring an
increase in northerly afternoon winds. This will likely suppress ozone
production and accumulation and drop ozone levels back from the
low-moderate range today into the good range of the Air Quality Index on
Wednesday.  Less wind on Thursday along with temperatures in the 90's
will be conducive to a modest increase in ozone levels that day. 

PARTICLES: Once again there were some elevated hourly PM-10 (coarse
particle) concentrations this morning with 101.1ug/m3 at the Buckeye
monitoring site, 100.5ug/m3 at Durango, and 95.2ug/m3 at Greenwood.
PM-2.5 (fine particle) concentrations were quite low and 24-hour average
concentrations of both pollutants are forecast to remain in the good
range of the Air Quality Index.  Soil moisture loss will be on the
increase the rest of the week as afternoon temperatures climb into the
upper 90's by Friday. -Reith   


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

For transportation alternatives:
http://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