SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
February 7, 2016
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: February 6, 2016  1:18 PM MST 
Date Issued for:

February 6, 2016 evening

Date and Time Cancelled: February 7, 2016  night
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

9.3 26.5 NW   NA

02:00

14.6 27.6 NW 41.4 NA

03:00

9.7 28.8 NW 40.3 NA

04:00

6.3 24.2 NW 40.3 NA

05:00

24.2 32.2 NW 41.4 NA

06:00

13.4 38.0 NW 48.3 NA

07:00

307.2 49.5 NW 58.7 NA

08:00

118.1 44.9 NW 59.8 NA

09:00

382.5 48.3 NW 63.3 NA

10:00

600.2 51.8 NW 65.6 NA

11:00

476.2 47.2 NW 65.6 NA

12:00

127.6 51.8 NW 64.4 NA

13:00

147.6 44.9 NW 59.8 NA

14:00

78.1 47.2 NNW 61.0 NA

15:00

74.9 38.0 NNW 49.5 NA

16:00

40.4 29.2 NW 57.5 NA

17:00

53.6 27.6 NNW 36.8 NA

18:00

10.5 29.9 NNW 46.0 NA

19:00

17.1 32.2 NNW 40.3 NA

20:00

7.7 34.5 NNW 43.7 NA

21:00

18.6 32.2 NNW 44.9 NA

22:00

17.4 29.9 NNW 41.1 NA

23:00

12.4 26.5 NNW 36.8 NA

24:00

8.8 28.8 NNW 39.1 NA

Averages

107.4 36.3      

 

PM10 24 hour Concentration = 107.4 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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