SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
January 17, 2015
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: January 16, 2015  2:05 PM MST 
Date Issued for:

January 16, 2015  11:00 PM MST

Date and Time Cancelled: January 17, 2015  3:00 PM MST
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

26.4 19.7 NNW   NA

02:00

12.0 23.0 NNW   NA

03:00

13.1 28.8 NNW 35.7 NA

04:00

62.1 31.1 NW 39.1 NA

05:00

4.6 26.5 NW 36.8 NA

06:00

2.6 21.9 WNW 32.2 NA

07:00

4.6 9.2 W   NA

08:00

3.6 18.4 NW   NA

09:00

11.6 23.0 NW 31.3 NA

10:00

11.5 25.3 NW 42.6 NA

11:00

11.7 24.2 NW 33.4 NA

12:00

13.3 21.9 NW   NA

13:00

13.3 21.9 NW   NA

14:00

5.1 16.1 NNW   NA

15:00

8.4 13.8 NW   NA

16:00

6.0 9.2 NW   NA

17:00

5.3 5.8 NNW   NA

18:00

1.2 9.2 WNW   NA

19:00

1.6 12.7 WNW   NA

20:00

10.7 8.1 WNW   NA

21:00

4.2 calm calm   NA

22:00

3.9 5.8 SSE   NA

23:00

12.7 5.8 E   NA

24:00

7.8 calm calm   NA

Averages

10.7 17.3      

 

PM10 24 hour Concentration = 10.7 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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