Hopkinsville, Kentucky Air Quality
Hopkinsville has a median AQI of 41, earning an air quality grade of A- — excellent air quality that ranks better than 50% of US cities. Air quality has remained relatively stable over the past decade. Particulate matter (PM2.5) is the primary concern, often linked to vehicle traffic, industrial activity, and wildfire smoke. In 2025, Hopkinsville recorded 141 good air quality days (78% of monitored days).
Population: 30,906 • County: Christian
Current AQI
Quick Facts
| Current AQI | 15 — Good |
| Air Quality Grade | A- |
| Median AQI (2025) | 41 |
| vs. U.S. Cities | Better than 50% |
| Primary Pollutant | PM2.5 |
| Unhealthy Days/Year | 0 |
| 10-Year Trend | → Stable |
| Data Source | EPA AQS (historical) · AirNow (live) |
Health Recommendation
Air quality is satisfactory, and air pollution poses little or no risk.
It's a great day to be active outside!
5-Day AQI Forecast
Last 90 Days
Current Pollutant Levels
Real-time data from EPA AirNow
Local Air Quality Context
Air quality data for Hopkinsville is sourced from the Clarksville monitoring area, located approximately 17 miles from city center. This EPA-certified station continuously tracks particulate matter (PM2.5), the primary driver of air quality alerts in this area.
Hopkinsville tends to see elevated PM2.5 readings during fall and winter months when temperature inversions trap pollutants near the surface. Wood burning, vehicle exhaust, and reduced wind speeds compound the effect. Residents with respiratory conditions should monitor forecasts closely between November and February.
AQI Trend (10 Years)
Air Quality Days by Year
Hopkinsville Median AQI by Year
Annual EPA air quality data for Hopkinsville — median AQI, day-category breakdown, and primary pollutant per year.
| Year | Median AQI | Good Days | Unhealthy Days | Max AQI | Primary Pollutant |
|---|---|---|---|---|---|
| 2025 | 41 | 141 | — | 75 | PM2.5 |
| 2024 | 42 | 274 | — | 84 | PM2.5 |
| 2023 | 47 | 213 | 5 | 117 | PM2.5 |
| 2022 | 48 | 201 | — | 85 | PM2.5 |
| 2021 | 49 | 190 | — | 99 | PM2.5 |
| 2020 | 41 | 249 | — | 85 | Ozone |
| 2019 | 40 | 228 | — | 80 | Ozone |
| 2018 | 41 | 217 | — | 90 | Ozone |
| 2017 | 41 | 230 | — | 71 | Ozone |
| 2016 | 41 | 223 | — | 90 | Ozone |
Source: EPA Air Quality System (AQS) annual summaries. "Unhealthy Days" includes Unhealthy for Sensitive Groups, Unhealthy, Very Unhealthy, and Hazardous categories.
2025 Air Quality Summary
Primary Pollutant Days (2025)
Days when each pollutant was the primary driver of AQI. Learn about pollutants →
Frequently Asked Questions About Hopkinsville Air Quality
What is the air quality in Hopkinsville today?
The current AQI in Hopkinsville is 15, rated "Good". Air quality is good — outdoor activity is safe for everyone today. Air quality is satisfactory, and air pollution poses little or no risk.
Is air quality in Hopkinsville getting better or worse?
Air quality in Hopkinsville has been stable. The median AQI has remained stable at around 41 over the past decade.
What is the most common air pollutant in Hopkinsville?
PM2.5 is the primary air pollutant in Hopkinsville, responsible for 106 days (59% of monitored days) in 2025. Particulate matter originates from vehicle exhaust, wildfires, construction, and industrial activity.
How many unhealthy air days does Hopkinsville have per year?
In 2025, Hopkinsville recorded 78% good air quality days (141 days) out of 180 monitored days. There were 0 Unhealthy for Sensitive Groups days and 0 Unhealthy days (AQI above 100). The highest single-day AQI recorded was 75.
What air quality grade does Hopkinsville receive?
Hopkinsville receives an air quality grade of A-, placing it better than 50% of US cities. This is based on a median AQI of 41 in 2025, with 141 good air quality days. The EPA monitors air quality in this area continuously using certified monitoring stations.
Air Quality Grade
Better than 50% of US cities
Nearby Cities
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National Rankings
See how Hopkinsville compares to every other US city by air quality.
Best Air Quality Cities →All city rankingsRecommended Air Purifiers for Hopkinsville
Hopkinsville sees its worst PM2.5 during winter temperature inversions when particulates get trapped near ground level. A unit with True HEPA and an auto-mode sensor is most effective for responding to these spikes.
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