What is the air quality trend in Santiago?

Over the past 3 days, Santiago had an average AQI of 66 based on station measurements. The worst day was with AQI .

How is Santiago air quality measured?

Air quality in Santiago 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 Santiago, Chile

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

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

Current AQI
Moderate

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

37h · 86 stations

Daily Summary

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-04-10	88	68–112	29.7 µg/m³	21h	85
2026-04-09	77	65–89	24.3 µg/m³	15h	85
2026-04-08	33	33–33	8.0 µg/m³	1h	1

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