Processed on 2024-03-04 13:04:43 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 Idaho spent in each AQI category during the the month of October.

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.

October in Idaho

October 2014 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 150 0 0 0 0 0 42
New 134 16 0 0 0 0 42

October 2015 – 17 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 230 13 0 0 0 0 13
New 203 40 0 0 0 0 13

October 2016 – 32 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 295 11 0 0 0 0 14
New 273 33 0 0 0 0 14

October 2017 – 19 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 319 47 0 0 0 0 50
New 278 88 0 0 0 0 50

October 2018 – 37 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 447 37 0 0 0 0 28
New 399 85 0 0 0 0 28

October 2019 – 22 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 456 22 0 0 0 0 66
New 406 72 0 0 0 0 66

October 2020 – 34 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 345 125 9 1 0 0 32
New 293 175 11 1 0 0 32

October 2021 – 19 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 409 16 0 0 0 0 55
New 371 54 0 0 0 0 55

October 2022 – 23 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 387 53 0 0 0 0 40
New 323 117 0 0 0 0 40

October 2023 – 17 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 457 15 0 0 0 0 72
New 435 37 0 0 0 0 72