Oklahoma Department of Environmental Quality
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2013 2018 OKLAHOMA Carbon Monoxide
Highest 8 Hour Averages (ppm) through June 21, 2018
Site  2013 2014 2015 2016 2017 2018
  1st 2nd 1st 2nd 1st 2nd 1st 2nd 1st 2nd 1st 2nd
Tulsa 1.3 1.0 1.0 0.9 1.2 1.1 1.9 1.6 1.0 1.0 1.0 1.0
Site 1127 20-Jan 2-Feb 9-Dec 12-Jan 20-Jan 27-Jan 22-Jul 22-Jul 2-Jan 11-Jan 5-Jan 4-Jan
                         
OKC 0.9 0.8 0.7 0.7 2.0 0.9 0.9 0.9 0.8 0.8 1.0 1.0
Site 1037 4-Jan 18-Jan 26-Jan 9-Dec 3-Mar 3-Mar 14-Jan 27-Jan 7-Jan 10-Jan 24-Jan 14-Mar
                         
OKC Near Road new in 2015 1.1 0.9 1.1 1.1 1.3 1.3 2.0 1.0
Site 0097 4-Dec 28-Aug 15-Nov 26-Nov 11-Jan 10-Dec 4-Jan 9-Jan