Air quality in Boundary County, Idaho, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Boundary County, Idaho, 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 Boundary County, Idaho is rated Good today. The primary pollutant identified is PM2.5 (fine particles). A single valid measurement recorded a PM2.5 concentration of 6.3 µg/m³. No PM10 value is available for this assessment.
Data are shown via OpenAQ and reflect the current conditions in the area. 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). In Boundary County the only pollutant with reported measurements is PM2.5, and there are three monitoring rows contributing to the dataset. All three entries are recent enough to be considered up‑to‑date, with the newest reading recorded at 2026-02-10 23:00 UTC.
Across these stations the observed PM2.5 values range from a low of 1.3 µg/m³ to a high of 6.5 µg/m³, while the median concentration sits at 6.3 µg/m³. The 10th percentile is 2.3 µg/m³ and the 90th percentile reaches 6.46 µg/m³, indicating that most measurements cluster toward the upper end of the observed spread. Because only PM2.5 is captured, there is no information on other common pollutants such as ozone or nitrogen dioxide for this location. The three recent rows provide a snapshot of current conditions, but they represent a limited spatial sample; air quality can still differ across neighborhoods and times not covered by these measurements.
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 air‑quality data for Boundary County 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 conditions at that time; actual air quality can differ across neighborhoods and change throughout the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Porthill | pm25 | 1.3 | µg/m³ | 2025-10-08 19:00 UTC |
| Mt Hall | pm25 | 6.5 | µg/m³ | 2025-10-28 19:00 UTC |
| Boundary County | pm25 | 6.3 | µg/m³ | 2026-02-10 23:00 UTC |