SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
January 16, 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

13.1 8.1 W   NA

02:00

3.9 6.9 NW   NA

03:00

16.1 9.2 NNW   NA

04:00

8.7 6.9 NW   NA

05:00

4.6 8.1 WNW   NA

06:00

8.1 8.1 WNW   NA

07:00

29.1 5.8 WNW   NA

08:00

12.2 calm calm   NA

09:00

40.2 3.5 NNE   NA

10:00

115.6 calm calm   NA

11:00

73.6 3.5 NW   NA

12:00

120.3 5.8 E   NA

13:00

60.5 calm calm   NA

14:00

34.6 3.5 NE   NA

15:00

49.0 calm calm   NA

16:00

64.0 calm calm   NA

17:00

74.6 calm calm   NA

18:00

96.3 3.5 WNW   NA

19:00

46.0 18.4 NNW   NA

20:00

23.5 17.3 NNW   NA

21:00

22.5 17.3 NNW   0.00

22:00

20.5 12.7 WNW   NA

23:00

5.9 12.7 WNW   NA

24:00

5 20.4 NNW   NA

Averages

39.5 9.5      

 

PM10 24 hour Concentration = 39.5 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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