Hendricks, Indiana Air Quality
Hendricks County, Indiana (IN)
↓ 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 | 37 | 51 | 119 | 324 | 32 | 4 | Ozone |
| 2022 | 34 | 46 | 87 | 338 | 14 | 0 | Ozone |
| 2021 | 33 | 46 | 80 | 347 | 18 | 0 | Ozone |
| 2020 | 32 | 45 | 87 | 348 | 18 | 0 | Ozone |
| 2019 | 34 | 47 | 93 | 348 | 13 | 0 | Ozone |
| 2018 | 33 | 48 | 108 | 335 | 28 | 2 | Ozone |
| 2017 | 38 | 50 | 93 | 220 | 20 | 0 | Ozone |
| 2016 | 40 | 67 | 100 | 146 | 37 | 0 | Ozone |
| 2015 | 35 | 45 | 61 | 179 | 4 | 0 | Ozone |
| 2014 | 36 | 47 | 77 | 175 | 8 | 0 | Ozone |
What This Means for Hendricks County Residents
Hendricks, Indiana has received an Air Quality Grade of B (71/100) based on a decade of EPA monitoring data. The current median AQI of 37 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 Ground-Level Ozone. Over the past 5 years, this area has averaged 1 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.