What is the air quality trend in San Bernardo?

Over the past 8 days, San Bernardo had an average AQI of 149 based on station measurements. The worst day was 2026-06-02 with AQI 166.

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.

146

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 77 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-06-09	148	146–151	54.6 µg/m³	0.3	2h	77
2026-06-08	145	107–162	56.0 µg/m³	0.2	24h	75
2026-06-07	158	99–185	78.9 µg/m³	0.3	24h	74
2026-06-06	163	156–172	78.0 µg/m³	0.3	24h	76
2026-06-05	154	123–181	65.4 µg/m³	0.2	24h	75
2026-06-04	125	77–159	47.1 µg/m³	0.1	24h	74
2026-06-03	138	99–163	54.1 µg/m³	0.2	24h	74
2026-06-02	166	136–179	85.8 µg/m³	0.3	21h	74

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