[ADEQ Forecasts] ADEQ Daily Air Quality Forecast for Sat., June 9

Fri Jun 8 11:56:45 MST 2007

For more information, or if you have problems viewing the image, please
visit our Web page:

http://www.azdeq.gov/environ/air/ozone/ensemble.pdf

VERY UNHEALTHY  (201-300)

UNHEALTHY (151-200)

UNHEALTHY FOR SENSITIVE GROUPS (101-150)

MODERATE (51-100)

GOOD (0-50)

For more information visit:

http://www.epa.gov/airnow/aqibroch

*LINK TO EXCEEDANCE & HEALTH STATEMENT INFO FOR THE 2005-06 & 2006-07
FORECAST SEASONS* <http://www.azdeq.gov/environ/air/ozone/pmstats.pdf> 

AIR QUALITY FORECAST FOR SATURDAY, JUNE 9, 2007

This report is updated by 1:00 p.m. Sunday thru Friday and is valid

for areas within and bordering Maricopa County in Arizona

FORECAST

UDATE

NOTICES

(*SEE BELOW FOR DETAILS) 

AIR POLLUTANT

YESTERDAY

THU 06/07/2007

NONE

Highest AQI Reading/Site

(Preliminary data only)

TODAY

FRI 06/08/2007

NONE

TOMORROW

SAT 06/09/2007

NONE

EXTENDED

SUN 06/10/2007

NONE

1BO3*

85

HUMBOLDT MOUNTAIN

54

MODERATE

82

MODERATE

87

MODERATE

2BCO*

8

WEST PHOENIX

9

GOOD

8

GOOD

7

GOOD

3BPM-10*

76

WEST 43RD

68

MODERATE

57

MODERATE

52

MODERATE

4BPM-2.5*

58

DURANGO 

43

GOOD

41

GOOD

38

GOOD

* O3 = Ozone      CO = Carbon Monoxide      PM-10 = Particles 10 microns
& smaller      PM-2.5 = Particles smaller than 2.5 microns

*"Ozone Health Watch" means that the highest concentration of OZONE may
approach the federal health standard.

"PM-10 or PM-2.5 Health Watch" means that the highest concentration of
PM-10 or PM-2.5 may approach the federal health standard.

"High Pollution Advisory" means that the highest concentration of OZONE,
PM-10, or PM-2.5 may exceed the federal health standard.

"DUST" means that short periods of high PM-10 concentrations caused by
outflow from thunderstorms are possible.

Health message for Friday, June 8:U  Unusually Sensitive people should
consider limiting prolonged outdoor exertion.

Health message for Saturday, June 9:U  Unusually Sensitive people should
consider limiting prolonged outdoor exertion.

24BUSynopsis and Discussion

Particulates are beginning to disperse nicely after that strong wind
event Wednesday in Arizona.  It's ozone, however, that has unexpectedly
increased.  There must have been some good import of un-scavenged ozone
and precursors Wednesday into Thursday that lead to elevated levels
Thursday afternoon in the far north and east parts of the Valley.  An
early check shows that some of these sights didn't drop off much, so
Friday may be another day with high readings.  Currently, Arizona is in
between a small area of low pressure off the coast of Los Angeles and an
area of high pressure over Texas.  The gradient isn't that strong, so
winds will remain fairly light from the south the next few days.  It's
possible that we could see ozone levels in the upper "Moderate" range
through Sunday before the weaker low decides to push east.  Particulates
will continue to decrease across the forecast area this weekend.  Check
back Sunday for a look at your coming week's weather and air quality.
Have a great weekend!  -J.Paul

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