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SOUTH DAKOTA Department of
Agriculture & Natural Resources

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Air Quality

 

Air Quality Alert - High Winds
October 11, 2020
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: October 11, 2020  8:45 AM MDT 
Date Issued for:

October 11, 2020  8:45 AM MDT

Date and Time Cancelled: October 11, 2020  5:00 PM MDT
PM Concentrations location: Credit Union
Weather Observations: Rapid City Regional Airport

Time

PM10
Concentration

Wind Speed

Direction

Peak Wind

Precipitation

(military)

(Credit Union -ug/m3)

(mph)

 

(mph >30)

(inches)

01:00

58.6 22 S 29 NA

02:00

44.9 17 S   NA

03:00

51 9 S   NA

04:00

47.7 9 SSE   NA

05:00

51.2 10 SE   NA

06:00

29 0 Calm   NA

07:00

145.1 7 SSE   NA

08:00

110.9 22 Wind 31 NA

09:00

66.7 18 NNW 37 NA

10:00

214.3 23 NNW 36 NA

11:00

370 26 NNW 46 NA

12:00

86.1 31 NNW 46 NA

13:00

74.5 41 NNW 58 NA

14:00

21.2 36 NW 49 NA

15:00

6.7 30 NW 51 NA

16:00

11.3 18 NW 25 NA

17:00

32.2 9 NW   NA

18:00

31.2 14 NW   NA

19:00

16.2 12 NW 21 NA

20:00

8.4 10 NW 25 NA

21:00

12.8 9 Wind   NA

22:00

9.3 10 NNW   NA

23:00

5.6 7 WNW   NA

24:00

8.3 5 NW   NA

Averages

63.1 7 18    

 

PM10 24 hour Concentration = 63.1 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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