[ADEQ Forecasts] ADEQ Daily Air Quality Forecast for Wed., June 27

Tue Jun 26 13:44:37 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, JUNE 27, 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 06/25/2007

NONE   

Highest AQI Reading/Site

(Preliminary data only)

TODAY

TUE 06/26/2007

NONE  

TOMORROW

WED 06/27/2007

NONE 

EXTENDED

THU 06/28/2007

NONE

O3*

77

RIO VERDE

59

MODERATE

64

MODERATE

74

MODERATE

CO*

10

WEST PHOENIX

11

GOOD

12

GOOD

10

GOOD

PM-10*

72

COYOTE LAKES

67

MODERATE

69

MODERATE

76

MODERATE

PM-2.5*

53

DURANGO

38

GOOD

42

GOOD

48

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, June 26:   Unusually sensitive people should
consider limiting prolonged or heavy exertion outdoors. 

Health message for Wednesday, June 27:   Unusually sensitive people
should consider limiting prolonged or heavy exertion outdoors. 

Synopsis and Discussion

Clear nights and sunny hot days - typical for local June weather - are
forecast to continue the remainder of the work week while an upper level
ridge amplifies just to the east of Arizona.  Dispersion provided by
afternoon westerly (upslope) winds should offset high ground-level ozone
production enough to keep highest concentrations confined to the far
eastern portion of the local forecast area.   Meanwhile, morning
stagnation episodes - due to inversion formation in the dry air mass -
will contribute to spikes in PM-10 (coarse particle) levels after
sunrise that will rapidly decrease by noon.  Highest air pollution
levels should be no higher than the mid-moderate range of the Air
Quality Index thru Thursday. -Reith 

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