What is the air quality trend in Buin?

Over the past 8 days, Buin had an average AQI of 151 based on station measurements. The worst day was 2026-06-01 with AQI 169.

How is Buin air quality measured?

Air quality in Buin 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 Buin, Chile

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

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

122

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 22 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-08	144	102–161	54.7 µg/m³	23h	22
2026-06-07	158	96–184	78.4 µg/m³	24h	22
2026-06-06	163	158–174	78.1 µg/m³	24h	22
2026-06-05	152	125–164	62.6 µg/m³	24h	21
2026-06-04	122	78–156	44.7 µg/m³	24h	21
2026-06-03	137	92–162	52.8 µg/m³	24h	22
2026-06-02	165	139–179	83.8 µg/m³	24h	22
2026-06-01	169	169–169	90.9 µg/m³	1h	21

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