Air quality in Puchuncaví, Valparaiso Region, Chile today

Mr. Duck’s Air Quality Score

Moderate air today for Puchuncaví, Valparaiso 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 today in Puchuncaví is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles).

Measurements recorded by OpenAQ show a PM2.5 reference value of 20.0 and a PM10 reference value of 47.0, based on twelve valid observations. 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 OpenAQ feed for Puchuncaví in the Valparaíso Region contains data from five monitoring stations, each providing up to six measured pollutants: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤ 10 µm (PM₁₀), particulate matter ≤ 2.5 µm (PM₂.₅) and sulfur dioxide (SO₂). The most recent updates are mixed: CO, NO₂ and O₃ were last refreshed on 2021‑08‑20 21:00 UTC, while SO₂, PM₁₀ and PM₂.₅ have newer entries from 2026‑02‑10 13:00 UTC, indicating that half of the pollutants have data less than three days old, but the other half rely on information that is more than two years old.

Across the five stations the recorded values show a wide spread for several gases. CO ranges from 0 to 237.49 µg/m³ with a median of 222.1 µg/m³ and a 90th‑percentile near the maximum, suggesting most recent readings cluster toward the upper end of the range. NO₂ varies between 0 and 33.31 µg/m³ (median 13.72 µg/m³), while O₃ spans 2.67 to 43.24 µg/m³ (median 25.56 µg/m³). For the particulates, PM₁₀ values are tightly grouped between 29.86 and 47.0 µg/m³ (median 44.0 µg/m³) and PM₂.₅ between 17.0 and 22.36 µg/m³ (median 18.0 µg/m³). SO₂ shows the broadest range of the newer data, from 8.9 to 80.49 µg/m³ with a median of 19.07 µg/m³.

Because three pollutants rely on data that is over two years old, the snapshot does not capture current fluctuations for CO, NO₂ and O₃. The more recent SO₂, PM₁₀ and PM₂.5 measurements provide a fresher view of particulate and sulfur dioxide levels, but overall city conditions can still differ by location and time due to the limited number of stations and uneven timestamp coverage.

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 dataset for Puchuncaví includes twelve valid measurements and is refreshed — Updated within 3 days, with the latest data recorded on 2026‑02‑10 at 13:00 UTC. This snapshot reflects conditions at a specific time; air quality can differ across neighborhoods and throughout the day, so values may not represent every location or moment in the city.

OpenAQ station rows