What is the air quality in Rancagua?

Rancagua, Chile has an annual US AQI of 81 (Polluted) and average PM2.5 of 24.3 µg/m³, ranking #3836 of 5856 cities. Main pollutant: PM2.5.

What is the cleanest month in Rancagua?

January is typically the cleanest month (AQI 56) and June the most polluted (AQI 125).

Where does Rancagua's air quality data come from?

PM2.5: 1998–2026 (monitors 2016–2026, satellite 1998–2016, 2018, 2021–2023; 2025–2026 provisional). Measured by government monitoring stations. Full sources are on the methodology page.

Rancagua, Chile — Air Quality & Clean City Guide 2026

Rancagua Air Quality Data

Global rank	City	Continent	AQI	PM2.5
3836	Rancagua, Chile	South America	AQI 81	PM2.5 24.3 µg/m³