2025 Ozone Scorecard – Tulsa Air Quality

3 Exceedance Days: 11-Sep, 16-Sep, 11-Oct

Updated through: December 31, 2025

Monitor Site			2025 Highest 8-Hr Ozone Averages (ppm)* (1st through 4th highest daily readings)				Design Value 3-Year Average of the 4th highest readings
2022 4th High	2023 4th High	2024 4th High	1st Highest date	2nd Highest date	3rd Highest date	4th Highest date	2022-2024 3-Yr Avg	2023-2025 3-Yr Average
West (#144 Mannford)			.069 09-Apr	.069 17-Oct	.066 13-Mar	.064 04-Aug	.069	.067
.070	.070	.069
East (#178 Lynn Lane)			.071 11-Oct	.070 09-Apr	.068 06-Jun	.066 13-Mar	*.073*	.071
.073	.078	.069
Central (#1127 Tulsa)			.069 12-Aug	.069 19-Sep	.068 13-Mar	.066 11-Sep	*.072*	.070
.073	.075	.070
North (#226 Skiatook)			.072 11-Sep	.071 16-Sep	.070 19-Sep	.069 09-Apr	.073	.071
.075	.074	.071
South (#174 Glenpool)			.065 16-Jun	.064 09-Apr	.064 13-Aug	.063 12-May	.071	.068
.070	.072	.071

An Ozone Exceedance = 0.071 ppm or greater
Exceedance days are unhealthy air days and shown in red in the above table.

The EPA Ozone Standard uses the Design Value: Although certainly concerning, exceedance days are not the same thing as ‘violating the ozone standard’. The standard uses the current 4th highest reading(daily 8-hr avg), averaged with the 4th highest readings from the two prior years. This 3-year average is called the Design Value. Each monitor’s readings and averages are calculated uniquely and whichever is the highest is the Ozone Design Value for the Tulsa area.

A Violation of the ozone standard = Design Value 0.071 ppm or greater.

Our 2025 Design Value is currently 0.071ppm determined by the North monitor. This is calculated by averaging the monitor’s 2023 4th high value of 0.074, 2024 4th high of 0.071, and the 2025 4th highest reading of 0.071 (the standard does not round).

Does our 2023-2025 Design Value meet the EPA ozone standard? NO

*2025 data is preliminary and subject to change as a result of the ODEQ/EPA verification process

Tulsa Area Ozone Alert! Days (2000 – present)
Year	May	June	July	August	September	October	TOTAL Alert! Days
2025							0
2024	18th	14th	12th, 19th	6th		4th	6
2023	27th	6th, 7th, 8th, 9th, 14th, 16th, 17th		10th, 17th, 21st, 22nd, 23rd, 26th			14
2022		22nd, 29th	11th, 14th, 19th, 20th, 21st				7
2021		15th, 16th, 17th					3
2020							0
2019		20th			5th		2
2018	9th, 10th, 17th		19th, 20th, 25th	1st, 2nd, 10th			9
2017		8th		3rd	13th		3
2016		20th, 28th	28th	10th			4
2015		10th					1
2014			24th				1
2013		13th	12th	22nd	4th		4
2012	18th	25th, 26th, 27th, 28th, 29th	10th, 11th, 12th, 13th, 21st, 22nd, 28th	2nd, 3rd, 6th, 7th, 8th, 10th	4th, 5th		21
2011		3rd, 15th , 24th, 28th	2nd , 6th , 8th, 9th, 15th, 29th	3rd, 4th, 5th, 17th, 20th, 21st, 24th, 25th, 26th, 27th, 28th	1st, 2nd, 3rd, 13th		25
2010	28th			12th, 19th, 23rd , 28th			5
2009		24th, 25th, 26th, 27th, 30th	1st, 7th, 11th, 16th	13th, 25th			11
2008			18th, 28th, 31st	1st, 2nd, 4th, 5th, 26th			8
2007				2nd, 3rd, 14th, 15th, 16th			5
2006	25th	12th, 15th, 29th, 30th	1st, 2nd, 17th, 19th, 20th, 21st	24th			12
2005		21st, 22nd, 24th, 25th, 26th	30th	1st, 2nd, 4th, 10th	3rd, 4th, 5th		13
2004			15th, 21st, 22nd				3
2003			2nd, 3rd, 30th	6th, 7th, 23rd, 26th, 27th			8
2002		24th, 25th	9th, 10th, 25th	6th, 9th, 31st			8
2001		26th	11th, 25th	3rd, 4th, 6th, 7th	14th		8
2000			17th	1st, 2nd, 3rd, 4th, 15th, 16th, 23rd, 24th, 25th, 26th	2nd, 3rd, 4th, 8th		15