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SOUTH DAKOTA Department of
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Air Quality

 

Air Quality Alert - High Winds
January 14, 2021
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: January 13, 2021  12:06 PM MDT 
Date Issued for:

January 13, 2021, 2021  6:00 PM MDT

Date and Time Cancelled: January 15, 2021  12:00 PM MDT
PM Concentrations location: Credit Union
Weather Observations: Rapid City Regional Airport

Time

PM10
Concentration

Wind Speed

Direction

Peak Wind

Precipitation

(military)

(Credit Union -ug/m3)

(mph)

 

(mph >30)

(inches)

01:00

171.1 48 NW 72 NA

02:00

349.2 39 NW 71 NA

03:00

290.5 45 NW 75 NA

04:00

792.9 56 NW 72 NA

05:00

279.8 40 NW 67 NA

06:00

386.1 41 NW 62 NA

07:00

488.7 36 NW 64 NA

08:00

35.6 39 NW 55 NA

09:00

113.1 38 NW 60 NA

10:00

134.3 39 NW 64 NA

11:00

166.9 43 NW 69 NA

12:00

333.8 46 NW 69 NA

13:00

184.9 51 NNW 74 NA

14:00

639.9 58 NNW 77 NA

15:00

374.6 45 NW 66 NA

16:00

131.3 46 NW 63 NA

17:00

361.1 46 NNW 62 NA

18:00

501.5 48 NW 66 NA

19:00

170.6 44 NW 71 NA

20:00

113.6 46 NW 69 NA

21:00

74.7 49 NW 68 NA

22:00

93.4 49 NW 70 NA

23:00

36.8 49 NW 66 NA

24:00

30 39 NNW 60 NA

Averages

260.6 45 18    

 

PM10 24 hour Concentration = 260.6 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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