Air quality in Delta, Colorado, United States of America today
Mr. Duck’s Air Quality Score
Good air today for Delta, 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 Delta, Colorado is rated as Good today. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 3.5 and a PM10 reference value of 21.0, based on twelve valid observations collected via OpenAQ.
Overall conditions meet the criteria for the Good category according to the latest 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 current station data listed for this city is focused on particulate matter (PM). Only one monitoring location in Delta supplies data, and it provides measurements for two pollutants: PM10 and PM2.5. Both readings were last updated on 2026-02-10 23:00 UTC, which falls within the “updated within 7 days” freshness category, so the information is relatively current.
PM10 values are all identical at 21.0 µg/m³, with the minimum, median and maximum each equal to that figure, indicating no observed variation in this dataset. PM2.5 shows a similarly uniform result of 3.5 µg/m³ across its single record. Because there is only one station contributing both pollutants, the coverage is limited to a single point in the city, and the lack of multiple rows means the data cannot reveal spatial differences or temporal trends beyond this snapshot.
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 twelve valid measurements and is updated within three days, with the most recent reading recorded on 2026‑02‑10 at 23:00 UTC. This snapshot provides a current view of air quality in Delta, Colorado, but conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in this summary.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Delta | pm10 | 21.0 | µg/m³ | 2026-02-10 23:00 UTC |
| Delta | pm25 | 3.5 | µg/m³ | 2026-02-10 23:00 UTC |