Jefferson, Alabama Air Quality
Jefferson County, Alabama (AL)
→ Stableover 10 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).
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 | 61 | 89 | 255 | 73 | 272 | 20 | PM2.5 |
| 2022 | 54 | 71 | 105 | 128 | 235 | 2 | PM2.5 |
| 2021 | 56 | 77 | 189 | 104 | 256 | 5 | PM2.5 |
| 2020 | 54 | 70 | 129 | 119 | 244 | 3 | PM2.5 |
| 2019 | 58 | 80 | 150 | 85 | 267 | 13 | PM2.5 |
| 2018 | 56 | 76 | 156 | 98 | 263 | 4 | PM2.5 |
| 2017 | 56 | 73 | 129 | 104 | 258 | 3 | PM2.5 |
| 2016 | 56 | 77 | 151 | 105 | 252 | 9 | PM2.5 |
| 2015 | 55 | 73 | 147 | 106 | 254 | 5 | PM2.5 |
| 2014 | 58 | 75 | 112 | 69 | 290 | 6 | PM2.5 |
What This Means for Jefferson County Residents
Jefferson, Alabama has received an Air Quality Grade of C (53/100) based on a decade of EPA monitoring data. The current median AQI of 61 falls in the "Moderate" range.
The primary pollutant affecting this area is Fine Particulate Matter (PM2.5). Over the past 5 years, this area has averaged 9 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.