What is the air quality trend in Osorno?

Over the past 3 days, Osorno had an average AQI of 107 based on station measurements. The worst day was 2026-07-21 with AQI 142.

How is Osorno air quality measured?

Air quality in Osorno 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 Osorno, Chile

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

42h

PM2.5 Station

42h · 3 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	142	15–311	87.3 µg/m³	18h	2
2026-07-20	85	23–235	35.1 µg/m³	22h	2
2026-07-19	94	59–130	31.7 µg/m³	2h	2

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