SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
May 1, 2010
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: May 1, 2010   12:21 AM MDT 
Date Issued for: May 1, 2010    Early Morning
Date and Time Cancelled: May 1, 2010    6:00 PM MDT
PM Concentrations location: Credit Union
Weather Observations:  

Time

PM10
Concentration

Wind Speed

Direction

Peak Wind

Precipitation

(military)

(Credit Union -ug/m3)

(mph)

 

(mph >30)

(inches)

01:00

4.2 20.7 WNW   NA

02:00

6.5 17.3 WNW   NA

03:00

2.9 10.4 WNW   NA

04:00

0.4 13.8 W   NA

05:00

3.6 18.4 WNW   NA

06:00

4.0 11.5 WNW   NA

07:00

-0.9 16.1 WNW   NA

08:00

6.5 18.4 NW   NA

09:00

0.7 28.8 W 38.0 NA

10:00

7.9 36.8 WNW 43.7 NA

11:00

12.2 28.8 NW 43.7 NA

12:00

12.3 28.8 WNW 41.4 NA

13:00

12.5 21.9 WNW 32.2 NA

14:00

4.6 20.7 WNW   NA

15:00

4.4 11.5 NNW   NA

16:00

5.6 15.0 NW   NA

17:00

12.0 17.3 NW   NA

18:00

1.5 16.1 WNW   NA

19:00

11.3 11.5 W   NA

20:00

5.4 12.7 W   NA

21:00

2.4 calm calm   NA

22:00

5.1 5.8 WNW   NA

23:00

9.8 5.8 N   NA

24:00

1.7 5.8 N   NA

Averages

5.7 17.1      

PM10 24 hour Concentration = 5.7 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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