What is the air quality trend in Buin?

Over the past 8 days, Buin had an average AQI of 141 based on station measurements. The worst day was 2026-05-24 with AQI 177.

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.

153

Current AQI
Unhealthy Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 23 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	155	155–155	63.3 µg/m³	1h	23
2026-05-29	138	93–155	51.4 µg/m³	24h	22
2026-05-28	126	86–156	46.4 µg/m³	24h	22
2026-05-27	130	91–156	47.8 µg/m³	24h	23
2026-05-26	95	53–155	32.7 µg/m³	24h	22
2026-05-25	138	75–207	69.4 µg/m³	24h	21
2026-05-24	177	166–196	105.4 µg/m³	24h	21
2026-05-23	170	162–190	93.3 µg/m³	22h	21

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