What is the air quality trend in Rancagua?

Over the past 15 days, Rancagua had an average AQI of 59 based on station measurements. The worst day was 2026-06-09 with AQI 81.

How is Rancagua air quality measured?

Air quality in Rancagua is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Rancagua, Chile

Name: Rancagua Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Rancagua, Chile.

129

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

304h

PM2.5 Station

304h · 2 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	81	4–139	27.4 µg/m³	7h	3
2026-06-08	60	10–150	18.9 µg/m³	23h	3
2026-06-07	64	22–176	21.7 µg/m³	21h	3
2026-06-06	48	7–144	14.3 µg/m³	22h	3
2026-06-05	40	10–95	11.2 µg/m³	19h	3
2026-06-04	66	11–185	25.1 µg/m³	22h	2
2026-06-03	45	8–109	12.9 µg/m³	20h	3
2026-06-02	40	8–95	10.9 µg/m³	23h	3
2026-06-01	60	7–161	20.4 µg/m³	18h	2
2026-05-31	67	11–298	30.0 µg/m³	22h	2
2026-05-30	61	21–128	18.2 µg/m³	23h	3
2026-05-29	70	21–175	23.3 µg/m³	23h	3
2026-05-28	61	30–119	17.7 µg/m³	23h	3
2026-05-27	64	31–157	19.5 µg/m³	23h	3
2026-05-26	70	16–192	25.7 µg/m³	15h	3

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