SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
October 23, 2017
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: October 23, 2017   4:53 AM MST 
Date Issued for:

October 23, 2017   4:53 AM MST

Date and Time Cancelled: October 23, 2017   6:00 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

4.3 25.3 NNW 39.1 NA

02:00

18.3 29.9 NW 39.1 NA

03:00

13.8 26.5 NW 38.0 NA

04:00

17.3 27.6 NW 36.8 NA

05:00

8.9 27.6 NW 35.7 NA

06:00

8.9 25.3 NW 36.8 NA

07:00

36.6 25.3 NW 36.8 NA

08:00

69.7 32.2 NW 43.7 0.00 IN

09:00

56.3 33.4 NW 41.4 NA

10:00

80.1 32.2 NW 42.6 NA

11:00

64.3 32.2 NW 47.2 NA

12:00

52.3 38.0 NW 47.2 NA

13:00

146.6 34.5 NNW 43.7 NA

14:00

- 36.8 NNW 47.2 NA

15:00

- 36.8 NNW 43.7 NA

16:00

118.6 28.8 NW 40.3 NA

17:00

16.8 20.7 NW   NA

18:00

7.7 18.4 NW   NA

19:00

9.6 16.1 NW   NA

20:00

16.3 20.7 NNW   NA

21:00

10.1 21.9 NW   NA

22:00

8.2 19.6 NW   NA

23:00

6.0 18.4 NW   NA

24:00

4.2 19.6 NNW   NA

Averages

35.2 27.0      

 

PM10 24 hour Concentration = 35.2 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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