What is the air quality trend in San Bernardo?

Over the past 3 days, San Bernardo had an average AQI of 144 based on station measurements. The worst day was 2026-05-30 with AQI 160.

How is San Bernardo air quality measured?

Air quality in San Bernardo 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 San Bernardo, Chile

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

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

158

Current AQI
Unhealthy Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

48h

PM2.5 Station

48h · 77 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-05-30	160	157–164	74.3 µg/m³	0.3	2h	77
2026-05-29	142	105–160	53.4 µg/m³	0.2	24h	75
2026-05-28	130	90–159	48.1 µg/m³	0.2	22h	75

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