SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
October 31, 2014
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: October 31, 2014  5:42 AM MDT 
Date Issued for:

October 31, 2014  Noon MDT

Date and Time Cancelled: October 31, 2014  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

22.0 12.7 SE   NA

02:00

15.3 11.5 SSE   NA

03:00

13.0 12.7 SSE   NA

04:00

11.8 12.7 SSE   NA

05:00

14.4 16.1 S   NA

06:00

10.5 18.4 SSE   NA

07:00

6.6 19.6 S   NA

08:00

10.5 21.9 S   NA

09:00

5.5 19.6 S   NA

10:00

12.2 24.2 S   NA

11:00

20.5 21.9 S 31.1 NA

12:00

20.0 21.9 S 32.2 NA

13:00

28.8 24.2 S 33.4 NA

14:00

31.6 26.5 SSE 33.4 NA

15:00

23.6 28.8 S 36.8 NA

16:00

29.9 20.7 S 33.4 NA

17:00

26.9 19.6 SSE   NA

18:00

22.0 20.7 SSE   NA

19:00

11.8 19.6 S   NA

20:00

19.9 12.7 S   NA

21:00

17.1 15.0 S   NA

22:00

23.8 19.6 S   NA

23:00

19.1 17.3 SSE   NA

24:00

20.6 16.1 SSE   NA

Averages

18.2 18.9      

 

PM10 24 hour Concentration = 18.2 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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