What is the air quality trend in Buin?

Over the past 15 days, Buin had an average AQI of 70 based on station measurements. The worst day was 2026-08-05 with AQI 122.

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.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

334h

PM2.5 Station

334h · 20 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	58	54–60	15.1 µg/m³	4h	20
2026-08-07	92	35–136	31.4 µg/m³	24h	21
2026-08-06	47	14–117	13.4 µg/m³	24h	19
2026-08-05	122	63–158	44.8 µg/m³	24h	21
2026-08-04	92	73–135	31.5 µg/m³	24h	21
2026-08-03	86	57–115	28.7 µg/m³	23h	20
2026-08-02	52	7–128	16.7 µg/m³	24h	19
2026-08-01	86	64–128	28.3 µg/m³	24h	20
2026-07-31	47	10–90	13.1 µg/m³	24h	19
2026-07-30	65	13–101	20.7 µg/m³	24h	20
2026-07-29	81	63–96	26.6 µg/m³	24h	20
2026-07-28	28	16–72	6.9 µg/m³	24h	20
2026-07-27	55	19–108	16.3 µg/m³	24h	20
2026-07-26	83	41–153	26.8 µg/m³	24h	21
2026-07-25	69	25–99	21.1 µg/m³	19h	19

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