Jerome, Idaho Air Quality
Jerome County, Idaho (ID)
↓ Improvingover 6 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 |
|---|---|---|---|---|---|---|---|
| 2020 | 13 | 26 | 49 | 213 | 0 | 0 | PM2.5 |
| 2019 | 20 | 37 | 55 | 345 | 8 | 0 | PM2.5 |
| 2018 | 24 | 57 | 145 | 270 | 45 | 5 | PM2.5 |
| 2017 | 30 | 57 | 154 | 235 | 46 | 6 | PM2.5 |
| 2016 | 17 | 31 | 53 | 198 | 1 | 0 | PM2.5 |
| 2015 | 16 | 42 | 59 | 20 | 2 | 0 | PM2.5 |
What This Means for Jerome County Residents
Jerome, Idaho has received an Air Quality Grade of B (78/100) based on a decade of EPA monitoring data. The current median AQI of 13 falls in the "Good" range.
Encouragingly, air quality here has been improving, with the median AQI dropping by 3 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 0 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.