Sumter, Alabama Air Quality
Sumter County, Alabama (AL)
↓ Improvingover 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). 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 | 35 | 55 | 84 | 303 | 60 | 0 | PM2.5 |
| 2022 | 38 | 56 | 81 | 266 | 89 | 0 | PM2.5 |
| 2021 | 35 | 52 | 71 | 311 | 44 | 0 | PM2.5 |
| 2020 | 33 | 51 | 74 | 314 | 41 | 0 | PM2.5 |
| 2019 | 38 | 54 | 67 | 287 | 67 | 0 | PM2.5 |
| 2018 | 31 | 48 | 77 | 327 | 30 | 0 | Ozone |
| 2017 | 38 | 54 | 85 | 279 | 71 | 0 | PM2.5 |
| 2016 | 37 | 53 | 74 | 282 | 54 | 0 | PM2.5 |
| 2015 | 48 | 62 | 107 | 169 | 144 | 1 | PM2.5 |
| 2014 | 34 | 47 | 74 | 232 | 9 | 0 | Ozone |
What This Means for Sumter County Residents
Sumter, Alabama has received an Air Quality Grade of B (71/100) based on a decade of EPA monitoring data. The current median AQI of 35 falls in the "Good" range.
Encouragingly, air quality here has been improving, with the median AQI dropping by 1 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.