Kootenai, Idaho Air Quality
Kootenai County, Idaho (ID)
↓ Improvingover 9 years
10-Year AQI Trend
The solid line shows the median AQI each year. The dashed line shows the 90th percentile (worst 10% of days). This area has seen measurable air quality improvement over the decade.
Air Quality Day Breakdown
Number of days per year in each EPA AQI category. Green = Good (AQI 0-50), Yellow = Moderate (51-100), Orange = Unhealthy for Sensitive Groups (101-150), Red = Unhealthy or worse (151+).
Year-by-Year Data
| Year | Median AQI | 90th Pct | Max AQI | Good Days | Moderate | Unhealthy+ | Pollutant |
|---|---|---|---|---|---|---|---|
| 2023 | 32 | 60 | 222 | 279 | 78 | 4 | PM2.5 |
| 2022 | 29 | 62 | 186 | 264 | 88 | 7 | PM2.5 |
| 2021 | 31 | 60 | 195 | 268 | 81 | 8 | PM2.5 |
| 2020 | 26 | 55 | 518 | 288 | 58 | 8 | PM2.5 |
| 2019 | 31 | 57 | 88 | 281 | 74 | 0 | PM2.5 |
| 2018 | 33 | 65 | 229 | 240 | 81 | 10 | PM2.5 |
| 2017 | 31 | 63 | 293 | 267 | 77 | 11 | PM2.5 |
| 2016 | 29 | 55 | 85 | 285 | 66 | 0 | PM2.5 |
| 2015 | 40 | 70 | 172 | 226 | 92 | 6 | PM2.5 |
What This Means for Kootenai County Residents
Kootenai, Idaho has received an Air Quality Grade of B (72/100) based on a decade of EPA monitoring data. The current median AQI of 32 falls in the "Good" range.
Encouragingly, air quality here has been improving, with the median AQI dropping by 8 points over the monitoring period. This trend suggests continued investment in emission controls and cleaner energy.
The primary pollutant affecting this area is Fine Particulate Matter (PM2.5). Over the past 5 years, this area has averaged 5 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.