Processed on 2024-03-04 13:53:22 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 Oregon 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 Oregon

February 2014 – 26 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 526 89 1 0 0 0 0
New 451 164 1 0 0 0 0

February 2015 – 30 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 505 96 0 0 0 0 15
New 411 190 0 0 0 0 15

February 2016 – 70 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 532 104 0 0 0 0 2
New 434 202 0 0 0 0 2

February 2017 – 32 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 561 74 0 0 0 0 9
New 512 123 0 0 0 0 9

February 2018 – 78 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 558 80 0 0 0 0 6
New 482 156 0 0 0 0 6

February 2019 – 37 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 662 83 0 0 0 0 11
New 586 158 1 0 0 0 11

February 2020 – 106 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 649 123 0 0 0 0 11
New 532 240 0 0 0 0 11

February 2021 – 67 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 1315 106 1 0 0 0 146
New 1194 227 1 0 0 0 146

February 2022 – 72 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 1496 278 2 0 0 0 44
New 1247 527 2 0 0 0 44

February 2023 – 79 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 1575 219 7 2 0 0 101
New 1419 375 7 2 0 0 101