SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
January 26, 2018
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: January 26, 2018   3:01 AM MST 
Date Issued for:

January 26, 2018   5:00 PM MST

Date and Time Cancelled: January 26, 2018   5:00 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

3.7 12.7 WNW   NA

02:00

12.0 11.5 NNW   NA

03:00

8.8 33.4 NNW 41.4 NA

04:00

7.3 26.5 NNW 33.4 0.02 IN

05:00

6.6 25.3 NNW 31.1 NA

06:00

4.6 19.6 NNW   NA

07:00

6.6 13.8 NNW   NA

08:00

26.0 23.0 NW   NA

09:00

12.0 24.2 NW 31.1 NA

10:00

34.8 18.4 NW   0.00 IN

11:00

94.6 15.0 N   NA

12:00

61.3 20.7 NNW   NA

13:00

35.3 19.6 NNW   NA

14:00

9.4 24.2 NNW 31.1 NA

15:00

15.3 17.3 NW   NA

16:00

8.4 13.8 NNW   NA

17:00

10.9 12.7 NW   NA

18:00

10.8 12.7 NW   NA

19:00

13.0 9.2 WNW   NA

20:00

20.5 11.5 WNW   NA

21:00

16.0 11.5 W   NA

22:00

17.0 10.4 W   NA

23:00

14.3 8.1 W   NA

24:00

8.1 6.9 SW   NA

Averages

19.1 16.8      

 

PM10 24 hour Concentration = 19.1 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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