Air quality in Golden, Colorado, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Golden, British Columbia, Canada
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Golden, Colorado is rated as Good today. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 6.52 and a PM10 reference value of 47.0 based on eight valid observations collected via OpenAQ.
Overall conditions meet the criteria for a Good category, reflecting relatively low concentrations of the measured pollutants. 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 one pollutant – fine particulate matter measured as PM2.5 – is available from the OpenAQ feed, and it comes from two monitoring rows that together represent two distinct sensor locations in Golden. The most recent reading was recorded on 2026-02-10 23:03 UTC, which falls within the “updated within 7 days” freshness category, indicating that at least one of the stations is providing fairly current information.
Across the two rows, PM2.5 values span from a low of 6.52 µg/m³ to a high of 2705.56 µg/m³, with a median (50th percentile) around 1356.04 µg/m³ and the 10th‑percentile at roughly 276.42 µg/m³ and the 90th‑percentile near 2435.66 µg/m³. This wide spread shows that measurements can differ dramatically depending on location and time, and with only two stations the coverage is limited. Because the dataset contains just these two recent entries, conditions elsewhere in Golden may not be captured, so observed values should be understood as snapshots rather than a comprehensive picture of city‑wide air quality.
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 Golden, Colorado includes eight valid measurements and was refreshed recently—updated within three days, with the latest update recorded at 2026‑02‑10T23:03:53+00:00. This snapshot reflects conditions captured across the monitoring network at that time. Keep in mind that air quality can differ by specific location and moment within the city, so values may vary locally and over short periods.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| City of Golden - W. Colfax Avenue | pm25 | 6.52 | µg/m³ | 2026-02-10 23:03 UTC |