What is the air quality trend in San Bernardo?

Over the past 8 days, San Bernardo had an average AQI of 81 based on station measurements. The worst day was 2026-08-05 with AQI 127.

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.

Current AQI
Moderate 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
2026-08-08	51	42–59	12.7 µg/m³	0.0	3h	77
2026-08-07	91	38–140	30.7 µg/m³	0.1	24h	80
2026-08-06	51	15–107	14.3 µg/m³	0.0	24h	76
2026-08-05	127	61–163	47.7 µg/m³	0.1	24h	80
2026-08-04	97	76–162	34.4 µg/m³	0.1	24h	79
2026-08-03	91	65–121	31.0 µg/m³	0.0	24h	74
2026-08-02	56	9–152	18.0 µg/m³	0.0	24h	75
2026-08-01	90	63–138	30.0 µg/m³	0.0	20h	75

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