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Air Quality

 

Air Quality Alert - High Winds
December 22, 2020
(PM10 Concentration and Meteorological Observations)
Click here for a graphical representation

Date and Time Issued: December 22, 2020  3:40 AM MDT 
Date Issued for:

December 22, 2020, 2020  5:00 PM MDT

Date and Time Cancelled: December 23, 2020  5:00 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

6.4 7 SE 0 NA

02:00

2.5 3 VAR 0 NA

03:00

3.2 9 SE 0 NA

04:00

4.7 9 SSW 0 NA

05:00

2.7 0 Calm 0 NA

06:00

7.2 9 S 0 NA

07:00

21.1 8 S 0 NA

08:00

25.3 0 Calm 0 NA

09:00

34.9 8 E 0 NA

10:00

47.5 8 ESE 0 NA

11:00

24.6 14 W 26 NA

12:00

6.4 8 W 0 NA

13:00

16.7 7 WSW 0 NA

14:00

10.1 8 WSW 0 NA

15:00

13.5 16 SW 0 NA

16:00

18 12 WSW 0 NA

17:00

22.2 13 W 0 NA

18:00

307.4 44 NNW 67 NA

19:00

13 33 NW 53 NA

20:00

30.5 41 NNW 56 NA

21:00

38 45 NNW 60 NA

22:00

21.4 35 NNW 49 NA

23:00

43.2 45 NNW 63 NA

24:00

81.9 43 NNW 59 NA

Averages

33.4 17.7 18    

 

PM10 24 hour Concentration = 33.4 ug/m3 Credit Union (West Rapid City)

PM10 24 hour Standard = 150 ug/m3

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