Air quality in Talca, Maule Region, Chile today

Mr. Duck’s Air Quality Score

Moderate air today for Talca, Maule 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 Talca today is classified as Moderate. The primary pollutant identified is PM2.5 (fine particles). Measurements show a PM2.5 reference value of 14.0 and a PM10 reference value of 51.0, based on four valid observations collected via OpenAQ.

These figures reflect the current conditions for the city. 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 Talca air‑quality record draws from three monitoring sites and a total of twenty‑four data rows. Of those rows, only four have been updated within the last three days; the remaining twenty are classified as old, and none are from today or the past week. Consequently, the freshest measurements in the set are from 2026‑02‑10 13:00 UTC for PM10 and PM2.5 at the Universidad de Talca station, while the most recent CO, NO₂, O₃ and SO₂ values date back to 2017‑06‑28 15:00 UTC at the same location. The latest PM1, relative humidity and temperature observations come from 2025‑12‑05 14:00 UTC at Universidad del Desarrollo.

The dataset includes ten pollutants: carbon monoxide (CO), nitrogen dioxide (NO₂), ozone (O₃), sulfur dioxide (SO₂), particulate matter of three size fractions (PM1, PM2.5, PM10), as well as relative humidity and temperature. For the fine particles, the recorded range for PM10 spans from 13.28 µg/m³ up to a maximum of 51.0 µg/m³, with a median near 18.60 µg/m³; PM2.5 varies between 4.16 µg/m³ and 14.0 µg/m³, medianing at about 9.10 µg/m³. The PM1 values are tightly clustered around 3.02–3.05 µg/m³, with a median of 3.03 µg/m³, reflecting very limited variation in that metric. Relative humidity measurements range from roughly 37.71 % to 38.51 %, centering on 38.11 %.

Because most rows are old, the picture they provide is static rather than current; conditions can differ across neighborhoods and over time. The data also shows an uneven temporal coverage: recent information exists for particulate matter but not for gases such as CO, NO₂, O₃ or SO₂, which remain at zero values from 2017. Users should keep in mind that the available numbers represent snapshots rather than a continuous, up‑to‑date monitoring stream for Talca.

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 Talca reflects four valid measurements and is marked as Updated within 3 days, with the latest values recorded at 2026‑02‑10T13:00:00+00:00. This snapshot provides a brief view of current conditions; however, air quality can differ across neighborhoods and change throughout the day, so local variations may not be captured in these figures.

OpenAQ station rows