SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
April 7, 2016
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: April 7, 2016  4:18 AM MST 
Date Issued for:

April 7 , 2016   4:18 AM MST

Date and Time Cancelled: April 7, 2016  7:00 PM MST
PM Concentrations location: Credit Union
Weather Observations:  Ellsworth Air Force Base

Time

PM10
Concentration

Wind Speed

Direction

Peak Wind

Precipitation

(military)

(Credit Union -ug/m3)

(mph)

 

(mph >30)

(inches)

01:00

5.6 28.8 NW 36.8 NA

02:00

9.6 20.7 NW   NA

03:00

6.9 21.9 NW   NA

04:00

13.9 25.3 NNW 31.1 NA

05:00

13.2 23.0 NNW   NA

06:00

19.9 21.9 NNW   NA

07:00

37.0 21.9 NW 33.4 NA

08:00

44.8 27.6 NNW 34.5 0.00 IN

09:00

37.7 25.3 NNW 33.4 NA

10:00

26.8 25.3 N 33.4 NA

11:00

89.7 29.9 NW 40.3 NA

12:00

32.0 31.1 NNW 39.1 NA

13:00

91.1 27.6 NNW 40.3 NA

14:00

72.3 28.8 NNW 41.4 NA

15:00

53.7 29.9 NNW 41.4 NA

16:00

32.5 29.9 NNW 36.8 NA

17:00

19.4 27.6 NNW 35.7 NA

18:00

18.9 18.4 N   NA

19:00

17.2 10.4 NNW   NA

20:00

9.8 9.2 WNW   NA

21:00

13.9 9.2 NW   NA

22:00

9.3 9.2 NNW   NA

23:00

12.0 6.9 N   NA

24:00

10.0 23.0 NW   NA

Averages

29.1 22.9      

 

PM10 24 hour Concentration = 29.1 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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