Air quality in Somerset, Kentucky, United States of America today
Mr. Duck’s Air Quality Score
Moderate air today for Somerset, England, United Kingdom
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Somerset, Kentucky is currently rated as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 22.3 and a PM10 reference value of 4.0 based on five valid observations.
Data is shown via OpenAQ. 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 air‑quality dataset for Somerset, Kentucky currently contains measurements for two pollutants – ozone (O₃) and fine particulate matter (PM₂.5). All observations come from a single monitoring location identified as SOMERST, so the city’s coverage is limited to one station but includes two separate data rows, one for each pollutant.
The ozone reading is 0.031 ppm and was last recorded on 2025‑11‑03 19:00 UTC. This value is the only entry in the record, meaning there is no range or variability captured for O₃; the minimum, median, and maximum are all identical at 0.031 ppm. The PM₂.5 measurement stands at 22.3 µg/m³ with its most recent timestamp of 2026‑02‑10 23:00 UTC. Like ozone, the particulate data shows a single point value without any spread – the reported minimum, median and maximum are all 22.3 µg/m³.
Because each pollutant is represented by just one observation, the dataset does not provide information on how concentrations change across different times of day or locations within Somerset. The timestamps indicate that the ozone data is older than a year, while the PM₂.5 reading is more recent, having been updated within the last 30 days. This uneven freshness means that the most current picture of air quality relies primarily on the particulate measurement.
Overall, the available data give a snapshot rather than a comprehensive view: one station supplies one ozone value from late 2025 and one PM₂.5 value from early 2026, with no additional rows to illustrate variability or broader spatial coverage across the city.
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 data shown reflects five valid measurements and is refreshed Updated within 3 days; the latest values were recorded on 2026‑02‑10T23:00:00+00:00. This snapshot represents conditions at a specific time and place, but air quality can vary across different neighborhoods and moments throughout Somerset, Kentucky.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| SOMERST | o3 | 0.031 | ppm | 2025-11-03 19:00 UTC |
| SOMERST | pm25 | 22.3 | µg/m³ | 2026-02-10 23:00 UTC |