Oklahoma Department of Environmental Quality
2026 Ozone
4th Highest 8-Hour Average (ppm) through March 11, 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	0.047	0.067	0.060
Tulsa East	0.078	0.069	0.066	0.052	0.071	0.062
Tulsa Central**	0.075	0.070	0.066	0.039	0.070	0.058
Skiatook	0.074	0.071	0.069	0.051	0.071	0.063
Glenpool	0.072	0.071	0.063	0.046	0.068	0.060
OKC North	0.072	0.072	0.068	0.046	0.070	0.062
Moore	0.072	0.074	0.069	0.049	0.071	0.064
Choctaw	0.067	0.076	0.071	0.045	0.071	0.064
Yukon	0.073	0.072	0.066	0.047	0.070	0.061
Lawton	0.071	0.073	0.070	0.042	0.071	0.061
McAlester	0.072	0.067	0.064	0.051	0.067	0.060
Seiling	0.068	0.072	0.068	0.037	0.069	0.059
Healdton	0.077	0.078	-	-	-	-
Tishomingo	0.072	0.070	-	-	-	-
Kessler                  (McClain County)	0.074	0.076	0.066	0.047	0.072	0.063
Waurika	0.074	0.069	-	-	-	-
Oklahoma Union      (Nowata County)	0.070	-	-	0.047	-	-
Copan	-	0.071	0.067	-	-	-
Burneyville	-	-	0.074	0.053	-	-
Great Plains State Park      (Kiowa County)	-	-	0.067	0.044	-	-
*All data is subject to change upon QA/QC -- data collection for 2026 is ongoing.