Processed on 2024-03-04 13:51:22 PST.

Disclaimer: Data presented here come from a variety of sources and do not represent official EPA measurements. Please visit AirNow for official measurements.

Cumulative exposure to smoke is an important public health metric. This report summarizes the cumulative number of days air quality monitors in Oklahoma spent in each AQI category during the the month of February.

The tables below include only permanent monitors measuring PM2.5 and show cumulative exposure under existing NAAQS (National Ambient Air Quality Standards) and under the 2024 revised standards for PM2.5.

In the tables and plots below, ‘Old’ designates cumulative days calculated using the 2023 PM2.5 NAAQS while ‘New’ is calculated using the 2024 revised PM2.5 NAAQS. The impact of the NAAQS revision is quite clear.

February in Oklahoma

February 2014 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 171 75 0 0 0 0 6
New 108 138 0 0 0 0 6

February 2015 – 10 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 197 36 0 0 0 0 19
New 142 91 0 0 0 0 19

February 2016 – 24 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 235 37 1 0 0 0 17
New 194 78 1 0 0 0 17

February 2017 – 12 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 193 44 0 0 0 0 43
New 158 79 0 0 0 0 43

February 2018 – 29 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 285 41 0 0 0 0 38
New 223 103 0 0 0 0 38

February 2019 – 14 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 276 105 0 0 0 0 11
New 207 174 0 0 0 0 11

February 2020 – 28 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 328 16 0 0 0 0 33
New 279 65 0 0 0 0 33

February 2021 – 13 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 200 100 0 0 0 0 8
New 125 175 0 0 0 0 8

February 2022 – 15 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 331 49 1 0 0 0 11
New 276 104 1 0 0 0 11

February 2023 – 15 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 329 68 0 0 0 0 23
New 253 144 0 0 0 0 23