What is the air quality trend in Osorno?

Over the past 8 days, Osorno had an average AQI of 113 based on station measurements. The worst day was 2026-05-26 with AQI 155.

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.

106

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	117	24–170	45.2 µg/m³	23h	2
2026-05-28	73	24–155	23.5 µg/m³	24h	3
2026-05-27	142	35–364	75.5 µg/m³	23h	3
2026-05-26	155	59–288	84.8 µg/m³	24h	3
2026-05-25	102	29–235	40.6 µg/m³	24h	3
2026-05-24	98	37–191	39.6 µg/m³	23h	3
2026-05-23	129	31–353	66.8 µg/m³	23h	3
2026-05-22	89	89–89	30.2 µg/m³	1h	2

Back to Osorno Air Quality