Oklahoma Department of Environmental Quality

PM2.5 through December 31, 2020

2020 Daily 24 hour averages (µg/m3)

Site

2017

2018

2019

1st

2nd

3rd

4th

5th

6th

7th

8th

17-19 Avg

18-20 Avg

2020

98th %

98th %

98th %

(date)

(date)

(date)

(date)

(date)

(date)

(date)

(date)

98%

98%

Critical Value

Moore (049)

43.7

36.1

32.8

28.9

26.6

25.6

25.3

23.7

19.8

22.4

63.1

16.1

23.0

20.4

27-Jun

28-Jun

19-Sep

7-Oct

7-Mar

18-Sep

8-Oct

20-Sep

OKC Near Road (097)

39.5

34.9

27.6

27.1

22.7

21.8

21.3

20.7

19.0

70.1

(new in 2018)

17.5

18.9

27-Jun

28-Jun

19-Sep

5-Jul

1-Jul

7-Mar

30-Jun

27-Mar

Glenpool (174)

44.1

30.4

25.5

23.2

22.2

22.1

20.8

19.9

20.8

20.4

65.1

21.0

23.2

18.2

27-Jun

7-Mar

28-Jun

4-Jul

16-Dec

14-Dec

30-Jun

17-Jul

Oklahoma Union (207)

closed 2020 — 2021

(new in 2018)

23.9

17.8

Copan (217)

35.6

29.8

21.6

20.3

19.9

19.6

19.5

18.8

(new in 2020)

27-Jun

28-Jun

7-Mar

8-Apr

27-Mar

10-Apr

1-Jul

2-Jul

Healdton (297)

54.0

31.3

30.7

29.3

25.5

25.2

24.9

24.0

18.5

21.2

66.8

15.8

24.0

15.7

27-Jun

19-Sep

28-Jun

18-Sep

16-Jul

9-Jul

30-Jun

1-Jul

McAlester (415)

51.6

32.1

29.9

23.0

22.6

22.2

21.7

21.6

21.1

22.0

62.2

19.0

27.2

17.1

27-Jun

18-Sep

7-Mar

19-Sep

30-Jun

16-Jul

17-Jul

28-Jun

Ponca City (604)

40.4

36.2

35.0

25.4

23.9

21.9

21.3

20.7

18.9

20.0

67.2

17.4

20.3

19.0

28-Mar

27-Mar

27-Jun

1-Jul

7-Mar

17-Jul

30-Jun

16-Dec

Lawton (651)

37.9

31.0

25.3

23.8

19.9

19.1

18.7

18.5

16.1

17.7

72.0

13.8

17.3

17.2

27-Jun

28-Jun

19-Sep

4-Jul

20-Sep

18-Sep

3-Jul

16-Jul

Seiling (860)

35.1

31.1

29.4

23.5

20.8

19.7

18.8

17.2

16.2

17.2

72.1

14.2

17.3

17.1

28-Jun

20-Sep

19-Sep

27-Jun

17-Sep

18-Sep

21-Sep

16-Feb

OKC North (1037)

39.0

34.9

33.5

25.1

24.8

24.2

23.4

21.9

20.3

21.6

63.6

18.0

21.8

21.1

27-Jun

28-Jun

19-Sep

7-Oct

20-Sep

18-Sep

21-Sep

7-Mar

Tulsa Central (1127)

46.2

29.2

24.4

22.9

22.6

21.9

21.4

20.7

24.7

23.4

57.0

24.7

27.0

22.5

27-Jun

28-Jun

7-Mar

17-Jul

9-Apr

8-Mar

30-Jun

4-Jul

8th Highs are considered 98th percentile until end of year data completeness can be calculated.