Air quality in Coos Bay, Oregon, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Coos Bay, Oregon, 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 Coos Bay, Oregon is rated as Good today. The primary pollutant identified is PM2.5 (fine particles), with a measured concentration of 1.6 µg/m³ reported from a single valid observation.
Data are shown via OpenAQ and reflect the current assessment for this location. 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 current station data listed for this city is focused on particulate matter (PM). Only PM2.5 measurements are available from two monitoring rows in Coos Bay, Oregon. The most recent reading was recorded on 2026-02-11 00:00 UTC, while the other row dates back beyond seven days, indicating that half of the data is relatively fresh and the remainder is older.
Across the two stations, PM2.5 values range from a low of 1.4 µg/m³ to a high of 1.6 µg/m³, with a median of 1.5 µg/m³ and the 10th‑percentile at 1.42 µg/m³ and the 90th‑percentile at 1.58 µg/m³. This narrow spread suggests limited variability among the reported measurements. Because only two rows contribute data, coverage is modest and does not capture broader spatial differences that may exist across Coos Bay. Consequently, while the available figures give a snapshot of fine particulate concentrations at specific points in time, they do not reflect the full range of conditions that can occur throughout 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 for Coos Bay reflects a single valid measurement and was updated today (2026‑02‑11T00:00:00+00:00). This snapshot represents conditions at the time of collection, but air quality can vary across different neighborhoods and moments within the city. Consequently, the displayed values provide only a brief glimpse of overall conditions and should be interpreted as such.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| CTCLUSI Radar Hill-O | pm25 | 1.4 | µg/m³ | 2025-11-21 01:00 UTC |
| Coos Bay Marshfield | pm25 | 1.6 | µg/m³ | 2026-02-11 00:00 UTC |