Kent, Delaware Air Quality
Kent County, Delaware (DE)
→ 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 | 46 | 64 | 207 | 216 | 124 | 8 | PM2.5 |
| 2022 | 42 | 58 | 84 | 277 | 87 | 0 | PM2.5 |
| 2021 | 42 | 58 | 108 | 260 | 98 | 2 | Ozone |
| 2020 | 39 | 54 | 80 | 296 | 66 | 0 | Ozone |
| 2019 | 44 | 61 | 85 | 248 | 117 | 0 | Ozone |
| 2018 | 42 | 59 | 133 | 267 | 96 | 2 | Ozone |
| 2017 | 42 | 59 | 101 | 264 | 96 | 1 | Ozone |
| 2016 | 42 | 63 | 136 | 272 | 90 | 2 | Ozone |
| 2015 | 44 | 64 | 100 | 245 | 120 | 0 | Ozone |
| 2014 | 46 | 62 | 108 | 230 | 133 | 1 | PM2.5 |
What This Means for Kent County Residents
Kent, Delaware has received an Air Quality Grade of B (65/100) based on a decade of monitoring data from the EPA's air quality monitoring program. The current median AQI of 46 falls in the "Good" range.
The primary pollutant affecting this area is Ground-Level Ozone. Over the past 5 years, this area has averaged 2 unhealthy air quality days per year — days when sensitive groups (children, elderly, those with respiratory conditions) should limit outdoor activity. The American Lung Association's State of the Air report provides additional context on long-term health risks from air pollution exposure.
Frequently Asked Questions
Kent, Delaware has a current median AQI of 46, which falls in the "Good" range. The area has received an Air Quality Grade of B (65/100) based on 10 years of EPA monitoring data.
Air quality in Kent, Delaware is stable over the past decade. The median AQI has changed by 0 points from 2014 to 2023.
Kent, Delaware averages 2 unhealthy air quality days per year over the past 5 years. On these days, sensitive groups including children, the elderly, and those with respiratory conditions should limit outdoor activity.
The primary pollutant affecting Kent, Delaware is Ground-Level Ozone. This is the dominant contributor to elevated AQI readings in the Kent County area.
Kent, Delaware averages 2 unhealthy air days per year. This is relatively low, making it a reasonable choice for asthma sufferers. The primary pollutant is Ground-Level Ozone, which is a known asthma trigger.
With a median AQI of 46 (Good), outdoor exercise in Kent, Delaware is generally safe year-round. Kent, Delaware averages 2 days per year when athletes should move workouts indoors.