What is the air quality trend in Copiapó?

Over the past 21 days, Copiapó had an average AQI of 59 based on station measurements. The worst day was 2026-05-30 with AQI 122.

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.

173

Current AQI
Unhealthy Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

326h

PM2.5 Station

326h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	122	71–173	59.8 µg/m³	2h	2
2026-05-29	49	15–114	14.5 µg/m³	15h	1
2026-05-28	45	9–124	13.1 µg/m³	16h	1
2026-05-27	64	14–114	20.2 µg/m³	18h	1
2026-05-26	65	11–166	23.1 µg/m³	13h	1
2026-05-25	67	14–285	29.3 µg/m³	17h	1
2026-05-24	40	13–191	14.6 µg/m³	19h	2
2026-05-23	72	7–168	25.6 µg/m³	18h	2
2026-05-22	84	5–372	50.2 µg/m³	14h	2
2026-05-21	50	13–97	14.7 µg/m³	18h	2
2026-05-20	55	17–156	16.9 µg/m³	16h	2
2026-05-19	60	5–162	20.3 µg/m³	12h	2
2026-05-18	71	11–213	30.6 µg/m³	10h	1
2026-05-17	27	8–45	6.6 µg/m³	7h	1
2026-05-16	55	2–345	26.1 µg/m³	21h	1
2026-05-15	74	13–175	26.2 µg/m³	20h	2
2026-05-14	48	3–212	19.1 µg/m³	21h	2
2026-05-13	55	2–92	16.4 µg/m³	16h	2
2026-05-12	51	5–162	16.3 µg/m³	20h	2
2026-05-11	46	8–140	13.7 µg/m³	19h	2
2026-05-10	42	7–159	13.1 µg/m³	14h	2

Back to Copiapó Air Quality