Air quality in Quillota, Valparaiso Region, Chile today
Mr. Duck’s Air Quality Score
Moderate air today for Quillota, Valparaiso 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 Quillota today falls into the Moderate category according to OpenAQ data. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 17.0 µg/m³ and a PM10 reference value of 33.0 µg/m³, based on three valid observations.
These figures reflect the current assessment 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 Quillota air‑quality record draws from a single monitoring site in the San Pedro neighborhood, so all six common pollutants are represented: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter ≤10 µm (PM₁₀), particulate matter ≤2.5 µm (PM₂.₅) and sulfur dioxide (SO₂). Because there is only one station row, the dataset does not capture spatial variation across the city.
The most recent observations are from early February 2026 for PM₁₀, PM₂.₅ and SO₂, with timestamps of 2026‑02‑10 13:00 UTC, 2026‑02‑06 18:00 UTC and 2026‑02‑10 14:00 UTC respectively. In contrast, the CO, NO₂ and O₃ values were last updated on 2021‑08‑20, making those three pollutants over four years older than the particulate and sulfur measurements. All six pollutants have a single reported value, so the minimum, median and maximum are identical for each: CO 114.48 µg/m³, NO₂ 14.27 µg/m³, O₃ 30.09 µg/m³, PM₁₀ 33.0 µg/m³, PM₂.5 17.0 µg/m³ and SO₂ 12.62 µg/m³.
Because the data consist of one reading per pollutant, there is no spread to describe; each metric shows a single point rather than a range over time. The freshness of the dataset is uneven: three pollutants are based on “old” data from 2021, while the other three have been refreshed within the last week. This mix means that any snapshot of Quillota’s air quality reflects only the conditions at one location and, for half of the pollutants, may not represent current levels. Users should keep in mind that actual concentrations can differ across neighborhoods and change rapidly beyond what these isolated timestamps capture.
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 Quillota reflects three valid measurements and is updated within 3 days, with the latest reading recorded at 2026‑02‑10T14:00:00+00:00. These values provide a recent snapshot of ambient conditions but represent only limited sampling points; air quality 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 |
|---|---|---|---|---|
| San Pedro | co | 114.48 | µg/m³ | 2021-08-20 14:00 UTC |
| San Pedro | no2 | 14.27 | µg/m³ | 2021-08-20 14:00 UTC |
| San Pedro | o3 | 30.09 | µg/m³ | 2021-08-20 14:00 UTC |
| San Pedro | pm10 | 33.0 | µg/m³ | 2026-02-10 13:00 UTC |
| San Pedro | pm25 | 17.0 | µg/m³ | 2026-02-06 18:00 UTC |
| San Pedro | so2 | 12.62 | µg/m³ | 2026-02-10 14:00 UTC |