Air quality in Antofagasta, Antofagasta Region, Chile today
Mr. Duck’s Air Quality Score
Moderate air today for Antofagasta, Antofagasta Region, Chile
This friendly indicator summarizes the latest city readings. For health guidance, please see: EPA AirNow or WHO.
Air quality today
The air quality in Antofagasta today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 15.0 µg/m³ and a PM10 reference value of 35.0 µg/m³, based on three valid observations recorded by OpenAQ.
These values reflect the current assessment for the city without implying any trend or cause. 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 Antofagasta air‑quality dataset currently contains three recent observations drawn from a single monitoring site in the city. All three pollutant readings were recorded within the last three days, so the information reflects conditions that are still fresh: PM10 and PM2.5 were logged at 2026‑02‑10 13:00 UTC, while SO₂ was captured two hours earlier at 2026‑02‑10 11:00 UTC.
Three pollutants are represented in this snapshot. The particulate matter measurements show a uniform value of 35.0 µg/m³ for PM10 and 15.0 µg/m³ for PM2.5, with each metric reporting the same minimum, median and maximum across the three rows. This lack of variation indicates that every recorded sample from the station reported identical concentrations during the short monitoring window. Sulphur dioxide appears at a single value of 12.62 µg/m³, also without any spread between its minimum, median and maximum.
Because only one station contributes data, spatial coverage across Antofagasta is limited; the three rows all stem from that same location, so city‑wide conditions may differ in areas not captured by this sensor. Nevertheless, the dataset’s recency—each entry updated within a few hours of measurement—means the numbers give an up‑to‑date picture for the monitored spot. The uniformity of values across all three pollutants suggests either stable emissions during the sampling period or that the limited sample size does not capture natural fluctuations that might occur elsewhere in 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 Antofagasta are based on three valid measurements and were refreshed recently, with the latest update recorded at 2026‑02‑10T13:00:00+00:00 (updated within 3 days). This snapshot reflects conditions at a specific time and place; air quality can differ across neighborhoods and vary throughout the day.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Antofagasta | pm10 | 35.0 | µg/m³ | 2026-02-10 13:00 UTC |
| Antofagasta | pm25 | 15.0 | µg/m³ | 2026-02-10 13:00 UTC |
| Antofagasta | so2 | 12.62 | µg/m³ | 2026-02-10 11:00 UTC |