2019 SEASON OZONE SCORECARD*
Tulsa Area Ozone Trends Chart
 

Exceedance Days:

Through 3/24/2019

Monitor Site 2019 Highest 8-Hr Ozone Averages (ppm)*
(1st through 4th highest daily readings)
DESIGN VALUE
3-Year Average

of the 4th highest readings
2016 4th High 2017 4th High 2018 4th High 1st Highest
date
2nd Highest
date
3rd Highest
date
4th Highest
date
2016-2018
3-Yr Avg
2017-2019 
3-Yr Average
West (#144 Mannford) .061
18-Mar
.061
22-Mar
.058
17-Mar
.057
19-Mar
.065 .063
064 .064 .069
East (#178 Lynn Lane) .059
17-Mar
.059
19-Mar
.056
22-Mar
.055
18-Mar
.065 .063
.063 .064 .070
Central (#1127 Tulsa) .061
22-Mar
.059
19-Mar
.056
18-Mar
.053
13-Mar
.065 .062
.062 .062 .073
North (#226 Skiatook) .062
22-Mar
.057
17-Mar
.057
18-Mar
.057
19-Mar
.067 .064
.064 .073
South (#174 Glenpool) .059
22-Mar
.058
18-Mar
.057
17-Mar
.056
19-Mar
.065 .062
.064 .065 .067

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

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 4th highest reading each year and averages it with the 4th highest readings from the two prior years. This 3-year average is called the Design Value. In the table above, the middle columns with dates show this year's 1st through 4th highest daily readings for each monitor. The 4th highest column is the one that counts at year end - the one that is averaged with the 4th highest readings from the two previous years. Each monitor's readings and averages are calculated uniquely and whichever Design Value is the highest becomes the area's Ozone Design Value.

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

Our 2019 Design Value is currently 0.064 ppm determined by the NORTH monitor, which is calculated by averaging that monitor's 2017 4th high value of 0.064, its 2018 4th high of 0.073, and the same monitor's 2019 current 4th highest reading of 0.057 (the standard uses no rounding).

Does our 2017-2019 Design Value meet the EPA ozone standard? Yes.

*2019 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 TOTAL Alert! Days

2019

2018 9th, 10th, 17th 19th, 20th, 25th 1st, 2nd, 10th 9
2017 8th 3rd 13th 3
2016 20th, 28th  28th 10th
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