Air quality in Blue Ash, Ohio, United States of America today
Mr. Duck’s Air Quality Score
Moderate air today for Blue Ash, Ohio, 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 in Blue Ash, Ohio is currently classified as Moderate. The primary pollutant identified for today is fine particulate matter (PM2.5). Data are shown via OpenAQ.
A single valid measurement recorded a PM2.5 concentration of 21.0 µg/m³. This value reflects the only observation available for the reporting period, and no PM10 reading was reported. The assessment is based on one confirmed sample. The valid measurement count for today is one, providing the basis for the current classification. The reported PM2.5 level of 21.0 µg/m³ corresponds to the reference value used in the assessment. 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 Blue Ash includes measurements of two pollutants: ozone (O₃) and fine particulate matter (PM₂.5). Both are reported from a single monitoring location, identified as the Sycamore station, so the city’s coverage consists of one sensor row per pollutant.
The most recent data point for PM₂.5 was recorded on 2026‑02‑10 at 23:00 UTC and is classified as “updated within 7 days,” indicating a fairly fresh reading. In contrast, the ozone measurement dates back to 2025‑11‑01 at 05:00 UTC and is flagged as “old data.” This means that while the PM₂.5 value reflects current conditions, the O₃ figure represents an older snapshot, and there are no measurements from today or the last three days for either pollutant.
All reported values are identical across their statistical summaries. For ozone, the minimum, median, and maximum are each 0.022 ppm, with the 10th and 90th percentiles matching that same figure. Similarly, PM₂.5 shows a uniform value of 21.0 µg/m³ for its minimum, median, maximum, and percentile estimates. The lack of variation suggests that only a single observation is available for each pollutant rather than a range of readings over time.
Overall, the dataset provides a very limited view: one recent PM₂.5 measurement and one older ozone reading from the same site. Because conditions can differ across neighborhoods and change throughout the day, these isolated values should be understood as snapshots rather than comprehensive representations of air quality throughout Blue Ash.
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 for Blue Ash reflects a single valid measurement and is updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 23:00 UTC. This snapshot provides a brief view of current conditions; however, air quality can differ across neighborhoods and change throughout the day, so local variations may not be captured in this single point of data.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Sycamore | o3 | 0.022 | ppm | 2025-11-01 05:00 UTC |
| Sycamore | pm25 | 21.0 | µg/m³ | 2026-02-10 23:00 UTC |