Oklahoma Department of Environmental Quality
2026 Ozone
4th Highest 8-Hour Average (ppm) through June, 2026
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.
	2023	2024	2025	2026*	23-25	24-26*
Mannford	0.070	0.069	0.064	0.059	0.067	0.064
Tulsa East	0.078	0.069	0.066	0.061	0.071	0.065
Tulsa Central	0.075	0.070	0.066	0.060	0.070	0.065
Skiatook	0.074	0.071	0.069	0.064	0.071	0.068
Glenpool	0.072	0.071	0.063	0.056	0.068	0.063
OKC North	0.072	0.072	0.068	0.065	0.070	0.068
Moore	0.072	0.074	0.069	0.068	0.071	0.070
Choctaw	0.067	0.076	0.071	0.062	0.071	0.069
Yukon	0.073	0.072	0.066	0.064	0.070	0.067
Lawton	0.071	0.073	0.070	0.064	0.071	0.069
McAlester	0.072	0.067	0.064	0.060	0.067	0.063
Seiling	0.068	0.072	0.068	0.068	0.069	0.069
Healdton	0.077	0.078	-	-	-	-
Tishomingo	0.072	0.070	-	-	-	-
Kessler                  (McClain County)	0.074	0.076	0.066	0.066	0.072	0.069
Waurika	0.074	0.069	-	-	-	-
Oklahoma Union      (Nowata County)	0.070	-	-	0.062	-	-
Copan	-	0.071	0.067	-	-	-
Burneyville	-	-	0.074	0.060	-	-
Great Plains State Park (Kiowa County)	-	-	0.067	0.063	-	-
*All data is subject to change upon QA/QC -- data collection for 2026 is ongoing.