What is the air quality trend in Arauco?

Over the past 15 days, Arauco had an average AQI of 42 based on station measurements. The worst day was 2026-08-08 with AQI 55.

How is Arauco air quality measured?

Air quality in Arauco 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 Arauco, Chile

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

287h

PM2.5 Station

287h · 5 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-08-08	55	55–55	14.0 µg/m³	1h	5
2026-08-07	52	10–162	16.0 µg/m³	24h	4
2026-08-06	42	23–86	10.7 µg/m³	24h	11
2026-08-05	41	18–68	10.2 µg/m³	24h	11
2026-08-04	50	30–123	13.4 µg/m³	24h	10
2026-08-03	50	11–134	13.7 µg/m³	24h	8
2026-08-02	45	13–72	11.9 µg/m³	20h	5
2026-08-01	34	6–117	9.1 µg/m³	21h	3
2026-07-31	44	1–269	18.5 µg/m³	22h	3
2026-07-30	31	6–59	7.5 µg/m³	23h	4
2026-07-29	40	10–115	11.0 µg/m³	18h	5
2026-07-28	42	15–80	10.6 µg/m³	18h	3
2026-07-27	35	10–67	8.9 µg/m³	16h	2
2026-07-26	38	6–114	10.1 µg/m³	15h	2
2026-07-25	36	8–65	9.1 µg/m³	13h	2

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