[ADEQ Forecasts] ADEQ Daily Air Quality Forecast for Wed., Mar. 28

Tue Mar 27 13:12:22 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 WEDNESDAY, MARCH 28, 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

DATE

NOTICES

(*SEE BELOW FOR DETAILS) 

AIR POLLUTANT

YESTERDAY

MON 03/26/2007

NONE 

Highest AQI Reading/Site

(Preliminary data only)

TODAY

TUE 03/27/2007

PM-10 HEALTH WATCH 

NWS WIND 

ADVISORY

TOMORROW

WED 03/28/2007

NONE

EXTENDED

THU 03/29/2007

NONE

O3*

48

PINNACLE PEAK & SOUTH PHOENIX

38

GOOD

44

GOOD

46

GOOD

CO*

17

WEST PHOENIX

10

GOOD

14

GOOD

19

GOOD

PM-10*

40

WEST 43RD

95

MODERATE

68

MODERATE

54

MODERATE

PM-2.5*

45

DURANGO

31

GOOD

34

GOOD

42

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 Tuesday, Mar 27: Unusually sensitive people should consider limiting prolonged exertion outdoors.

Health message for Wednesday, Mar 28: Unusually sensitive people should consider limiting prolonged exertion outdoors.

Synopsis and Discussion

The winds have begun to pick up from the west and southwest as a fairly strong cold front pushes through the region.  The deserts of Southern California and even Yuma, AZ have noted blowing dust with wind gusts above 40 mph Tuesday morning.  These winds will spread across the Phoenix forecast area this afternoon.  Interesting to note... The Phoenix metro area received over an inch of rain last week where the desert locations west of the Valley didn't get very much at all.  Much of the local soil should be anchored down by the recent moisture, but we could see some transport dust later on Tuesday afternoon.  This has prompted the PM-10 Health Watch for Tuesday in the Phoenix forecast area.  Cooler air will settle across the region Wednesday with Phoenix topping out in the low 70s.  High pressure will begin to build and temps will climb toward 90°F by Sunday.  Particulate levels will likely climb into the mid to upper "Moderate" category Tuesday at some sites, but concentrations will decrease through the end of the week under lighter winds.  Ozone will increase as winds decrease and temperatures rise.  Check back tomorrow for the latest.  Have a good day!  -J.Paul

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