What is the air quality trend in Copiapó?

Over the past 21 days, Copiapó had an average AQI of 69 based on station measurements. The worst day was 2026-05-27 with AQI 112.

How is Copiapó air quality measured?

Air quality in Copiapó 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 Copiapó, Chile

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

283h

PM2.5 Station

283h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	48	7–114	13.6 µg/m³	10h	1
2026-06-08	51	5–160	16.6 µg/m³	15h	1
2026-06-07	84	4–379	41.8 µg/m³	18h	1
2026-06-06	57	15–83	15.9 µg/m³	12h	1
2026-06-05	52	3–124	15.7 µg/m³	15h	1
2026-06-04	66	21–179	22.8 µg/m³	16h	1
2026-06-03	61	14–152	19.5 µg/m³	14h	1
2026-06-02	49	12–112	14.3 µg/m³	14h	1
2026-06-01	44	11–129	12.6 µg/m³	12h	1
2026-05-31	33	14–86	8.9 µg/m³	8h	1
2026-05-30	55	27–88	15.6 µg/m³	8h	1
2026-05-29	67	18–164	21.7 µg/m³	15h	1
2026-05-28	75	30–160	25.0 µg/m³	11h	1
2026-05-27	112	25–278	51.9 µg/m³	13h	1
2026-05-26	94	2–194	38.3 µg/m³	18h	1
2026-05-25	97	20–319	46.0 µg/m³	17h	1
2026-05-24	73	11–177	27.0 µg/m³	14h	1
2026-05-23	73	15–192	29.6 µg/m³	14h	1
2026-05-22	101	12–500	56.2 µg/m³	16h	1
2026-05-21	91	3–200	36.9 µg/m³	17h	1
2026-05-20	83	32–161	30.3 µg/m³	6h	1

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