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Data on this page are updated hourly from 7:20 AM until 11:20 PM (Eastern time)
It is important to note that the ozone monitoring data less than three
months old viewed on this website have
generally not been verified and
checked for quality assurance in accordance with federal requirements.
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| More Details about: St. Marks Wildlife Refuge |
| Ad Hoc Reporting |
AQS # G129-0001
St. Marks Wildlife Refuge
Wakulla County
, FL 32355
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Began Monitoring CO: 01/01/1984
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Hourly CO Data For Wednesday, February 18, 2026
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CO data below are shown in Parts Per Billion (PPB) |
Hour LST |
1-Hr Avg. |
Hour LST |
1-Hr Avg. |
| 1:00 AM |
0.076 |
1:00 PM |
0.119 |
| 2:00 AM |
0.115 |
2:00 PM |
0.136 |
| 3:00 AM |
0.119 |
3:00 PM |
0.135 |
| 4:00 AM |
0.119 |
4:00 PM |
0.125 |
| 5:00 AM |
0.12 |
5:00 PM |
0.12 |
| 6:00 AM |
0.121 |
6:00 PM |
0.122 |
| 7:00 AM |
0.118 |
7:00 PM |
0.108 |
| 8:00 AM |
0.129 |
8:00 PM |
0.122 |
| 9:00 AM |
0.129 |
9:00 PM |
0.116 |
| 10:00 AM |
0.132 |
10:00 PM |
0.118 |
| 11:00 AM |
0.129 |
11:00 PM |
0.112 |
| 12:00 PM |
0.134 |
12:00 AM |
0.111 |
| Last Updated: Eastern |
| Data are time-stamped at the end of the hour. |
| * = Hourly Value Not Available |
| M = Missing Hourly Value |
| B = Bad Hourly Value |
| Federal Air Quality Standard |
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NO2 is not monitored at this site.
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Began Monitoring Ozone: 01/01/1984
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Hourly Ozone Data For Wednesday, February 18, 2026
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Ozone data below are shown in Parts Per Billion (PPB) |
Hour LST |
1-Hr Avg. |
Hour LST |
1-Hr Avg. |
| 1:00 AM |
24 |
1:00 PM |
38 |
| 2:00 AM |
25 |
2:00 PM |
38 |
| 3:00 AM |
25 |
3:00 PM |
37 |
| 4:00 AM |
33 |
4:00 PM |
36 |
| 5:00 AM |
31 |
5:00 PM |
35 |
| 6:00 AM |
33 |
6:00 PM |
35 |
| 7:00 AM |
32 |
7:00 PM |
33 |
| 8:00 AM |
33 |
8:00 PM |
31 |
| 9:00 AM |
34 |
9:00 PM |
30 |
| 10:00 AM |
36 |
10:00 PM |
29 |
| 11:00 AM |
36 |
11:00 PM |
30 |
| 12:00 PM |
37 |
12:00 AM |
30 |
| Last Updated: Eastern |
| Data are time-stamped at the end of the hour. |
| * = Hourly Value Not Available |
| M = Missing Hourly Value |
| B = Bad Hourly Value |
| Federal Air Quality Standard |
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Began Monitoring PM 2.5: 01/01/1984
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PM 2.5 Data For Wednesday, February 18, 2026
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| PM 2.5 data below are shown in Micrograms Per Cubic Meter (mg/m3) |
Hour LST |
Reading |
Hour LST |
Reading |
| 1:00 AM |
2.4 |
1:00 PM |
7.5 |
| 2:00 AM |
0 |
2:00 PM |
5.2 |
| 3:00 AM |
0.7 |
3:00 PM |
7.4 |
| 4:00 AM |
3.5 |
4:00 PM |
6.3 |
| 5:00 AM |
1.9 |
5:00 PM |
7.6 |
| 6:00 AM |
3.5 |
6:00 PM |
4.3 |
| 7:00 AM |
4.8 |
7:00 PM |
3.3 |
| 8:00 AM |
5.5 |
8:00 PM |
2.9 |
| 9:00 AM |
6.1 |
9:00 PM |
3.1 |
| 10:00 AM |
6.7 |
10:00 PM |
3.8 |
| 11:00 AM |
7.6 |
11:00 PM |
2.7 |
| 12:00 PM |
6.4 |
12:00 AM |
1.6 |
| * = Hourly Value Not Available |
| M = Missing Hourly Value |
| B = Bad Hourly Value |
| Last Updated: Eastern |
Federal Air Quality Standard |
| Go To Top |
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PM 10 is not monitored at this site.
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Began Monitoring SO2: 06/18/2014
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Hourly SO2 Data For Wednesday, February 18, 2026
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SO2 data below are shown in Parts Per Billion (PPB) |
Hour LST |
1-Hr Avg. |
Hour LST |
1-Hr Avg. |
| 1:00 AM |
0 |
1:00 PM |
0.025 |
| 2:00 AM |
0 |
2:00 PM |
0.017 |
| 3:00 AM |
0 |
3:00 PM |
0 |
| 4:00 AM |
0 |
4:00 PM |
0 |
| 5:00 AM |
0 |
5:00 PM |
0 |
| 6:00 AM |
0 |
6:00 PM |
0 |
| 7:00 AM |
0 |
7:00 PM |
0 |
| 8:00 AM |
0 |
8:00 PM |
0 |
| 9:00 AM |
0 |
9:00 PM |
0 |
| 10:00 AM |
0 |
10:00 PM |
0 |
| 11:00 AM |
0.059 |
11:00 PM |
0 |
| 12:00 PM |
0.064 |
12:00 AM |
0 |
| Last Updated: Eastern |
| Data are time-stamped at the end of the hour. |
| * = Hourly Value Not Available |
| M = Missing Hourly Value |
| B = Bad Hourly Value |
| Federal Air Quality Standard |
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