| Oklahoma Department of Environmental Quality |
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2021 OKLAHOMA SO2 |
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Highest 1 Hour Daily Highs (ppb) through December 27, 2021 |
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| Site |
2021 Daily Max 1-hr Values |
3 Year Avg of 99th Percentile |
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| 2018 |
2019 |
2020 |
1st |
2nd |
3rd |
4th* |
18-20 Avg |
19-21 Avg |
2021 |
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| 99th % |
99th % |
99th % |
(date) |
(date) |
(date) |
(date) |
99th % |
99th % |
Critical Value |
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| Ponca City (604) |
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33.0 |
30.0 |
27.0 |
27.0 |
26 |
24 |
182 |
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| 31.0 |
23.0 |
23.0 |
20-Nov |
23-Nov |
9-Mar |
23-Jun |
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| OKC North (1037) |
8.0 |
2.0 |
1.0 |
1.0 |
2.0 |
1.3 |
225 |
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| 3.0 |
1.0 |
2.0 |
20-Dec |
1-Mar |
19-Jul |
6-Feb |
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| Tulsa
Newblock (175) |
11.0 |
10.0 |
6.0 |
5.0 |
7 |
6 |
216 |
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| 8.0 |
5.0 |
7.0 |
15-Dec |
2-Jan |
26-Sep |
26-Apr |
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| Tulsa TCWD (235) |
7.0 |
7.0 |
6.0 |
4.0 |
6 |
5 |
217 |
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| 6.0 |
6.0 |
5.0 |
30-Mar |
14-Jun |
29-Mar |
15-Jun |
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| Tulsa Central (1127) |
3.6 |
2.9 |
2.3 |
2.2 |
3 |
2 |
224 |
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| 3.3 |
2.6 |
1.7 |
10-Sep |
15-Dec |
20-Jul |
25-Feb |
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| Tulsa Riverside (179) |
closed |
4 |
5 |
219 |
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| 4.0 |
6.0 |
3.0 |
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| Oxbow/Kremlin (555) |
48.0 |
46.0 |
44.0 |
24.0 |
40 |
34 |
151 |
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| 43.0 |
45.0 |
32.0 |
8-Sep |
25-Feb |
15-Sep |
28-May |
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| Fort Gibson (170) |
closed |
16 |
9 |
210 |
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| 31.0 |
7.0 |
11.0 |
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| Pryor (188) |
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closed |
19 |
16 |
197 |
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| 25.0 |
16.0 |
15.0 |
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| * 4th Highs
are considered 99th percentile until end of year data completeness can be
calculated. |
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