SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
February 21, 2017
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: February 21, 2017   5:10 AM MST 
Date Issued for:

February 21, 2017   5:10 AM MST

Date and Time Cancelled: February 21, 2017   5:00 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

81.0 23.0 W   NA

02:00

13.3 12.7 SSW   NA

03:00

6.8 16.1 WSW   NA

04:00

5.3 9.2 S   NA

05:00

22.7 6.9 S   NA

06:00

15.3 4.6 ESE   NA

07:00

47.3 3.5 NE   NA

08:00

92.9 4.6 NNE   NA

09:00

15.0 17.3 W   NA

10:00

14.0 19.6 W   NA

11:00

25.4 32.2 W 41.4 NA

12:00

41.0 33.4 W 41.4 NA

13:00

31.8 25.3 WSW 36.8 NA

14:00

35.9 27.6 W 38.0 NA

15:00

34.7 27.6 WSW 41.4 NA

16:00

28.1 21.9 W 35.7 NA

17:00

26.4 28.8 W 36.8 NA

18:00

23.4 17.3 NNW   NA

19:00

7.5 20.7 NW   NA

20:00

4.0 18.4 NW   NA

21:00

2.8 3.5 SW   NA

22:00

4.3 9.2 SSW   NA

23:00

5.2 19.6 W   0.00

24:00

4.3 27.6 WNW 36.8 0.00

Averages

24.5 17.4      

 

PM10 24 hour Concentration = 24.5 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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