Oklahoma Department of Environmental Quality
2025 Ozone
4th Highest 8-Hour Average (ppm) through March 11, 2025
Standard: 3-year average of 4th highest daily maximum 8-hour concentrations shall not exceed 0.070 ppm
Site	4th Highest 8-hour Values				3-Yr Avg.
	2022	2023	2024	2025*	22-24	23-25*
Mannford	0.070	0.070	0.069	0.051	0.069	0.063
Tulsa East	0.073	0.078	0.069	0.050	0.073	0.066
Tulsa  Central	0.073	0.075	0.070	0.043	0.072	0.063
Skiatook	0.075	0.074	0.071	0.051	0.073	0.065
Glenpool	0.070	0.072	0.071	0.046	0.071	0.063
OKC North	0.072	0.072	0.072	0.050	0.072	0.065
Moore	0.070	0.072	0.074	0.049	0.072	0.065
Choctaw	0.073	0.067	0.076	0.052	0.072	0.065
Yukon	0.069	0.073	0.072	0.046	0.071	0.064
Lawton	0.068	0.071	0.073	0.050	0.070	0.065
McAlester	0.064	0.072	0.067	0.051	0.067	0.063
Seiling	0.069	0.068	0.072	0.052	0.069	0.064
Healdton	-	0.077	0.078	-	-	-
Tishomingo	-	0.072	0.070	-	-	-
Kessler                  (McClain County)	0.070	0.074	0.076	0.049	0.073	0.066
Waurika	-	0.074	0.069	-	-	-
Oklahoma Union      (Nowata County)	0.072	0.070	-	-	-	-
Copan	-	-	0.071	0.054	-	-
Burneyville	0.075	-	-	0.055	-	-
Great Plains State Park      (Kiowa County)	0.069	-	-	0.046	-	-
*All data is subject to change upon QA/QC -- data collection for 2025 is ongoing.