Howard, Indiana Air Quality
Howard 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 | 45 | 67 | 199 | 234 | 119 | 12 | Ozone |
| 2022 | 44 | 63 | 108 | 246 | 114 | 4 | Ozone |
| 2021 | 44 | 62 | 105 | 227 | 132 | 2 | PM2.5 |
| 2020 | 42 | 58 | 108 | 266 | 99 | 1 | Ozone |
| 2019 | 44 | 59 | 108 | 236 | 124 | 1 | Ozone |
| 2018 | 44 | 61 | 108 | 234 | 126 | 5 | PM2.5 |
| 2017 | 45 | 58 | 83 | 211 | 145 | 0 | PM2.5 |
| 2016 | 48 | 63 | 84 | 173 | 152 | 0 | PM2.5 |
| 2015 | 58 | 71 | 101 | 101 | 244 | 1 | PM2.5 |
| 2014 | 53 | 66 | 84 | 101 | 160 | 0 | PM2.5 |
What This Means for Howard County Residents
Howard, Indiana has received an Air Quality Grade of B (71/100) based on a decade of EPA monitoring data. The current median AQI of 45 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 4 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity.