What is the air quality trend in Antofagasta?

Over the past 7 days, Antofagasta had an average AQI of 71 based on station measurements. The worst day was 2026-05-26 with AQI 102.

How is Antofagasta air quality measured?

Air quality in Antofagasta 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 Antofagasta, Chile

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

112h

PM2.5 Station

112h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	51	11–129	15.3 µg/m³	16h	1
2026-05-28	56	16–161	18.1 µg/m³	18h	2
2026-05-27	78	17–284	34.2 µg/m³	16h	1
2026-05-26	102	17–218	49.3 µg/m³	13h	2
2026-05-25	80	13–226	35.5 µg/m³	16h	2
2026-05-24	66	17–159	21.8 µg/m³	16h	1
2026-05-23	64	1–153	22.0 µg/m³	17h	2

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