Air quality in Copiapó, Atacama Region, Chile today

Mr. Duck’s Air Quality Score

Moderate air today for Copiapó, Atacama Region, Chile

⚠️ This website is currently under active development. Some data may be incomplete or temporarily inaccurate. For health-critical decisions, please verify information through official government or environmental sources.

Categories follow US EPA AQI breakpoints for PM (estimate from latest valid measurements; this project does not compute EPA NowCast/24-hour AQI yet).

This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.

Air quality today

The air quality in Copiapó today is classified as Moderate. The primary pollutant measured is PM2.5, fine particulate matter that is being tracked alongside PM10. Current observations show a PM2.5 reference value of 21.0 and a PM10 reference value of 46.0, based on three valid measurements recorded by OpenAQ.

These figures reflect the latest data available for the city and provide a snapshot of ambient conditions at this time. 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 Copiapó air‑quality dataset currently includes three measured pollutants – sulfur dioxide (SO2), particulate matter 10 µm or smaller (PM10) and fine particulate matter 2.5 µm or smaller (PM2.5). Data come from a total of seven rows, but only five distinct monitoring stations have reported values; the remaining two rows lack recent observations. All three pollutants are represented by at least one station, yet coverage is uneven: SO2 appears in five rows, while PM10 and PM2.5 each appear in just a single row.

The freshest measurements were recorded on 2026‑02‑10. The latest SO2 reading was taken at 11:00 UTC, whereas the most recent PM10 and PM2.5 values were logged at 13:00 UTC the same day. Because all timestamps fall within three days of the current date, the dataset can be described as relatively up‑to‑date for Copiapó.

Across the available observations, SO2 concentrations range from a minimum of 12.15 µg/m³ to a maximum of 16.24 µg/m³, with a median value of 12.65 µg/m³ and the 10th–90th percentile spread between 12.34 and 15.18 µg/m³. PM10 is reported at a single constant level of 46.0 µg/m³, and PM2.5 likewise shows a solitary value of 21.0 µg/m³. This limited variability for the particulate metrics reflects the narrow station coverage rather than stable ambient conditions.

Overall, the dataset provides recent point measurements for three key pollutants but is constrained by sparse spatial sampling – especially for PM10 and PM2.5, which rely on a single monitoring location. Consequently, while the timestamps are fresh, the limited number of stations means that air‑quality conditions can differ across other parts of Copiapó and at times not captured in these rows.

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 Copiapó includes three valid measurements and was refreshed recently, with the latest update recorded on 2026‑02‑10 at 13:00 UTC; it is therefore considered updated within three days. This snapshot reflects conditions at a specific time and place, but air quality can differ across neighborhoods and throughout the day, so values may not represent the entire city’s experience.

OpenAQ station rows