|
Oklahoma Department of Environmental Quality | ||||||||||||||||
| NO2 through December 27, 2021 | |||||||||||||||||
| One hour daily maximum (ppb) | |||||||||||||||||
| Site | 2018 | 2019 | 2020 | 1st | 2nd | 3rd | 4th | 5th | 6th | 7th | 8th | 18-20 Avg | 19-21 Avg | 2021 | |||
| 98th % | 98th % | 98th % | (date) | (date) | (date) | (date) | (date) | (date) | (date) | (date) | 98% | 98% | Critical Value | ||||
| OKC Near Road (097) | 63.0 | 58.0 | 56.0 | 54.0 | 49.0 | 49.0 | 48.0 | 47.0 | 40.7 | 43.0 | 221.0 | ||||||
| 40.0 | 39.0 | 43.0 | 2-Dec | 22-Dec | 30-Nov | 15-Nov | 19-Feb | 5-May | 24-Sep | 18-Feb | |||||||
| OKC North (1037) | 49.0 | 48.0 | 47.0 | 46.0 | 45.0 | 45.0 | 45.0 | 44.0 | 39.3 | 229.0 | |||||||
| (new in 2018) | 38.0 | 36.0 | 19-Feb | 19-Feb | 19-Feb | 19-Feb | 19-Feb | 19-Feb | 19-Feb | 19-Feb | |||||||
| Tulsa Central (1127) | 47.4 | 47.3 | 44.1 | 42.5 | 42.5 | 41.9 | 40.8 | 40.5 | 36.7 | 37.3 | 231.7 | ||||||
| 38.9 | 36.3 | 35.0 | 19-Feb | 19-Feb | 19-Feb | 20-Feb | 2-Mar | 3-Mar | 30-Nov | 18-Feb | |||||||
| 8th Highs are considered 98th percentile until end of year data completeness can be calculated. | |||||||||||||||||