Air quality in Carter County, Kentucky, United States of America today
Mr. Duck’s Air Quality Score
Moderate air today for Carter County, Kentucky, United States of America
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality today in Carter County, Kentucky is rated as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 concentration of 13.3 µg/m³ based on two valid observations recorded by OpenAQ.
Overall conditions reflect the Moderate classification with no additional pollutants reported. This page is informational; for health guidance, use official sources such as EPA AirNow or WHO.
Latest sensor values
PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).
What the data includes
The dataset for Carter County, Kentucky currently includes measurements for two pollutants: ozone (O3) and fine particulate matter (PM2.5). Both are reported from a single monitoring site, identified as GRAYSON, so the city’s air‑quality picture is based on one location rather than a network of stations.
All available rows were updated within the past week; the most recent timestamps for both ozone and PM2.5 are 2026-02-10 23:00 UTC. This means the data are fresh and reflect conditions from just a few days ago. For ozone, the only recorded value is 0.036 ppm, which is also the minimum, median, and maximum across the dataset. Likewise, PM2.5 shows a single consistent reading of 13.3 µg/m³ at GRAYSON, again representing the full range of observed values.
Because there is just one monitoring point, the data capture only a narrow slice of air quality in Carter County. The uniform readings indicate no variation within the limited sample period, so any spatial or temporal differences across the county cannot be assessed from this set alone. Users should keep in mind that conditions may differ elsewhere in the county or at other times, and additional monitoring locations would be needed for a more comprehensive view.
Learn more about sources and filtering: About the data.
Trusted references: WHO (Air pollution) · US EPA AirNow · European Environment Agency (Air)
Latest sensor values (bars)
PM categories follow US EPA AQI breakpoints, shown here as an estimate derived from the latest valid measurements (this project does not compute EPA NowCast/24-hour AQI yet).
Data notes
The current dataset for Carter County includes two valid measurements and was refreshed recently, with the latest update recorded on 2026‑02‑10 at 23:00 UTC; it is therefore considered updated within three days. This snapshot reflects conditions at the time of sampling, but air quality can vary by location and time within the city, so actual exposure may differ from what is shown here.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| GRAYSON | o3 | 0.036 | ppm | 2026-02-10 23:00 UTC |
| GRAYSON | pm25 | 13.3 | µg/m³ | 2026-02-10 23:00 UTC |