[ADEQ Forecasts] ADEQ Daily Air Quality Forecast for Thurs., June 7

Wed Jun 6 12:09:56 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 THURSDAY, JUNE 7, 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

TUE 06/05/2007

PM-10 HEALTH WATCH

DUST IN THE P.M.

Highest AQI Reading/Site

(Preliminary data only)

TODAY

WED 06/06/2007

HIGH POLLUTION ADVISORY 

(PM-10)

DUST

TOMORROW

THU 06/07/2007

NONE

EXTENDED

FRI 06/08/2007

NONE

1BO3*

47

RIO VERDE

47

GOOD

50

GOOD

54

MODERATE

2BCO*

7

MULTIPLE SITES

7

GOOD

8

GOOD

9

GOOD

3BPM-10*

100

WEST 43RD

125

UNHEALTHY  FOR SENSITIVE GROUPS

78

MODERATE

68

MODERATE

4BPM-2.5*

51

DURANGO 

65

MODERATE

52

MODERATE

43

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 Wednesday, June 6:U  Active children and adults and people with respiratory disease, such as asthma, should limit outdoor exertion.

UHealth message for Thursday, June 7:U  Unusually Sensitive people should consider limiting prolonged outdoor exertion.

24BUSynopsis and Discussion

*A PM-10 HPA remains in effect for Wednesday, June, 6, 2007*

The winds have begun to pick up across the Valley Wednesday morning after a slight break overnight.  Particulate levels significantly increased Tuesday as this trough edged closer to the forecast area with West 43rd at 100 AQI, validating the Health Watch issued for Tuesday.  More blowing dust is expected throughout the day Wednesday in the deserts of Arizona as the associated cold front pushes through.  Afternoon desert temperatures will be in the low to mid 90s Wednesday and Thursday.  As the trough weakens, winds will decrease and temperatures will rebound to around 100°F by Friday.  Ozone levels were in the "Good" range Tuesday and should remain there through Thursday.  With lighter winds and warmer temperatures this weekend, we could see ozone level climb into the lower "Moderate" category by then.  The PM-10 High Pollution Advisory will remain in effect for Wednesday, but will be allowed to expire at midnight as conditions will improve.  Check back tomorrow for the latest.  Have a good day!  -J.Paul

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