Air quality in Rengo, O'Higgins Region, Chile today
Mr. Duck’s Air Quality Score
Moderate air today for Rengo, O'Higgins 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 Rengo today is classified as Moderate. The main pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 14.0 and a PM10 reference value of 41.0, based on two valid observations.
Data are shown via OpenAQ. 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 air‑quality record for Rengo includes six measured pollutants – carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), particulate matter 10 µm or less (PM10), particulate matter 2.5 µm or less (PM2.5) and sulfur dioxide (SO₂). All data come from a single monitoring station, so the dataset contains one row per pollutant.
The most recent observations are mixed in age. The latest O₃ reading was taken on 2021‑08‑20 21:00 UTC, while the newest PM10 and PM2.5 values were recorded on 2026‑02‑10 13:00 UTC, showing that particulate data have been updated within the last three days. In contrast, CO, NO₂ and SO₂ still reflect measurements from 2017‑06‑28 15:00 UTC, indicating those pollutants have not been refreshed for several years.
Across the six pollutants the recorded values are very narrow. CO, NO₂ and SO₂ each show a constant value of 0.0 µg/m³ (minimum, median and maximum all zero). Ozone is reported at a single level of 11.15 µg/m³, while PM10 and PM2.5 both have a uniform reading of 41.0 µg/m³ and 14.0 µg/m³ respectively. Because each pollutant has only one recorded figure, there is no spread between minimum and maximum values.
Overall the dataset provides complete coverage of the listed pollutants but relies on a single station and contains many outdated entries for gases. Consequently, while the current particulate measurements are recent, the older timestamps for CO, NO₂ and SO₂ mean that city‑wide conditions may differ from what these static figures suggest, especially at times or locations not captured by this lone sensor.
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 Rengo reflects two valid measurements and is updated within 3 days, with the most recent reading recorded on 2026‑02‑10 at 13:00 UTC. While this snapshot provides a current view of air quality, conditions can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.
OpenAQ station rows
| Station | Parameter | Value | Unit | Last updated |
|---|---|---|---|---|
| Rengo | co | 0.0 | µg/m³ | 2017-06-28 15:00 UTC |
| Rengo | no2 | 0.0 | µg/m³ | 2017-06-28 15:00 UTC |
| Rengo | o3 | 11.15 | µg/m³ | 2021-08-20 21:00 UTC |
| Rengo | pm10 | 41.0 | µg/m³ | 2026-02-10 13:00 UTC |
| Rengo | pm25 | 14.0 | µg/m³ | 2026-02-10 13:00 UTC |
| Rengo | so2 | 0.0 | µg/m³ | 2017-06-28 15:00 UTC |