Processed on 2024-03-04 13:04:53 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 November.

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.

November in Idaho

November 2014 – 9 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 85 15 0 0 0 0 55
New 79 21 0 0 0 0 55

November 2015 – 17 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 178 23 0 0 0 0 47
New 160 41 0 0 0 0 47

November 2016 – 32 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 212 38 0 0 0 0 60
New 195 55 0 0 0 0 60

November 2017 – 19 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 288 55 0 0 0 0 29
New 244 99 0 0 0 0 29

November 2018 – 37 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 289 67 0 0 0 0 109
New 234 122 0 0 0 0 109

November 2019 – 22 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 265 116 1 0 0 0 52
New 215 166 1 0 0 0 52

November 2020 – 34 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 331 86 0 0 0 0 79
New 265 152 0 0 0 0 79

November 2021 – 19 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 265 63 0 0 0 0 13
New 222 106 0 0 0 0 13

November 2022 – 23 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 259 56 1 0 0 0 25
New 209 106 1 0 0 0 25

November 2023 – 17 permanent monitors

Good Moderate USG Unhealthy Very Unhealthy Hazardous Missing
Old 263 64 1 0 0 0 106
New 209 118 1 0 0 0 106