SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
February 19, 2016
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: February 18, 2016  12:36 PM MST 
Date Issued for:

February 18, 2016   12:36 PM MST

Date and Time Cancelled: February 19, 2016  6:00 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

7.6 16.1 WNW   NA

02:00

6.9 5.8 WSW   NA

03:00

6.9 11.5 WSW   NA

04:00

7.3 11.5 W   NA

05:00

7.3 13.8 W   NA

06:00

8.8 18.4 WNW   NA

07:00

12.2 31.1 W 39.1 NA

08:00

10.0 33.4 W 46.0 NA

09:00

5.4 25.3 W 31.1 NA

10:00

7.8 24.2 W 35.7 NA

11:00

6.9 34.5 WNW 41.4 NA

12:00

5.2 34.5 WNW 41.4 NA

13:00

7.6 28.8 W 49.5 NA

14:00

15.4 29.9 WNW 40.3 NA

15:00

7.1 27.6 W 35.7 NA

16:00

4.7 20.7 W 35.7 NA

17:00

2.5 6.9 NNW   NA

18:00

6.7 4.6 SSE   NA

19:00

13.5 calm calm   NA

20:00

18.2 3.5 E   NA

21:00

21.9 calm calm   NA

22:00

35.0 3.5 NNE   NA

23:00

19.9 6.9 N   NA

24:00

28.7 calm calm   NA

Averages

11.4 18.7      

 

PM10 24 hour Concentration = 11.4 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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