What is the air quality trend in Arica?

Over the past 20 days, Arica had an average AQI of 57 based on station measurements. The worst day was 2026-05-20 with AQI 93.

How is Arica air quality measured?

Air quality in Arica 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 Arica, Chile

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

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

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

289h

PM2.5 Station

289h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	53	13–158	17.2 µg/m³	16h	1
2026-05-28	41	5–122	12.1 µg/m³	14h	1
2026-05-27	68	19–203	26.8 µg/m³	14h	1
2026-05-26	56	12–228	21.9 µg/m³	19h	1
2026-05-25	44	14–156	13.2 µg/m³	16h	1
2026-05-24	55	13–107	17.0 µg/m³	16h	1
2026-05-23	48	5–160	15.6 µg/m³	15h	1
2026-05-22	56	12–160	18.1 µg/m³	10h	1
2026-05-21	46	10–201	19.7 µg/m³	14h	1
2026-05-20	93	33–164	33.4 µg/m³	10h	1
2026-05-19	71	20–198	33.9 µg/m³	10h	1
2026-05-18	78	21–344	47.1 µg/m³	8h	1
2026-05-17	50	4–156	16.2 µg/m³	10h	1
2026-05-16	42	10–153	12.8 µg/m³	13h	1
2026-05-15	62	5–167	22.2 µg/m³	14h	1
2026-05-14	54	14–152	16.0 µg/m³	18h	2
2026-05-13	63	7–172	22.7 µg/m³	20h	1
2026-05-12	71	11–193	28.6 µg/m³	19h	1
2026-05-11	52	15–161	16.4 µg/m³	21h	1
2026-05-10	48	16–119	14.1 µg/m³	12h	1

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