What is the air quality trend in Calama?

Over the past 20 days, Calama had an average AQI of 54 based on station measurements. The worst day was 2026-05-10 with AQI 72.

How is Calama air quality measured?

Air quality in Calama 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 Calama, Chile

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

390h

PM2.5 Station

390h · 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	41	11–90	11.4 µg/m³	21h	2
2026-05-28	52	12–162	16.3 µg/m³	21h	2
2026-05-27	59	13–163	18.5 µg/m³	19h	2
2026-05-26	58	8–178	20.6 µg/m³	16h	2
2026-05-25	71	16–162	23.4 µg/m³	19h	2
2026-05-24	66	18–147	20.8 µg/m³	22h	2
2026-05-23	54	13–231	21.4 µg/m³	21h	2
2026-05-22	38	11–134	10.4 µg/m³	18h	2
2026-05-21	52	3–161	16.7 µg/m³	19h	2
2026-05-20	47	5–130	13.6 µg/m³	17h	2
2026-05-19	70	16–169	24.6 µg/m³	16h	1
2026-05-18	53	11–128	16.5 µg/m³	18h	1
2026-05-17	55	14–112	16.7 µg/m³	11h	1
2026-05-16	46	9–153	13.6 µg/m³	21h	2
2026-05-15	61	5–152	19.2 µg/m³	19h	2
2026-05-14	49	8–97	14.0 µg/m³	21h	3
2026-05-13	51	20–129	14.7 µg/m³	22h	2
2026-05-12	52	8–188	18.4 µg/m³	24h	2
2026-05-11	49	12–141	14.3 µg/m³	23h	3
2026-05-10	72	15–167	24.0 µg/m³	22h	2

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