SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
March 6, 2017
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: March 6, 2017   3:30 AM MST 
Date Issued for:

March 6, 2017   9:00 AM MST

Date and Time Cancelled: March 6, 2017 7:00 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

23.0 CALM CALM   NA

02:00

17.8 CALM CALM   NA

03:00

23.7 15.0 W   NA

04:00

14.1 11.5 W   NA

05:00

35.9 13.8 W   NA

06:00

55.0 9.2 NNW   NA

07:00

135.8 35.7 NNW 42.6 NA

08:00

81.4 33.4 NNW 51.8 NA

09:00

113.2 38.0 NNW 49.5 NA

10:00

37.1 35.7 NNW 42.6 NA

11:00

29.1 33.4 NW 44.9 NA

12:00

36.4 34.5 NW 49.5 NA

13:00

98.0 46.0 NW 64.4 NA

14:00

181.7 51.8 NW 65.6 NA

15:00

34.4 42.6 NW 55.2 NA

16:00

36.4 32.2 NW 43.7 NA

17:00

4.8 23.0 NW 39.1 NA

18:00

6.2 18.4 NW 31.1 NA

19:00

6.7 17.3 WNW 31.1 NA

20:00

7.5 12.7 W   NA

21:00

4.3 17.3 WNW   NA

22:00

3.3 16.1 W   NA

23:00

2.3 12.7 W   NA

24:00

0.4 15.0 W   NA

Averages

41.2 26.9      

 

PM10 24 hour Concentration = 41.2 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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