What is the air quality trend in Vallenar?

Over the past 20 days, Vallenar had an average AQI of 70 based on station measurements. The worst day was 2026-05-25 with AQI 107.

How is Vallenar air quality measured?

Air quality in Vallenar 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 Vallenar, Chile

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

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

122

Current AQI
Unhealthy for sensitive groups CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

294h

PM2.5 Station

294h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-08	54	9–151	16.9 µg/m³	17h	1
2026-06-07	93	5–379	47.6 µg/m³	13h	1
2026-06-06	46	4–153	13.7 µg/m³	13h	1
2026-06-05	56	1–167	19.7 µg/m³	12h	1
2026-06-04	50	10–161	16.8 µg/m³	13h	1
2026-06-03	48	1–147	15.0 µg/m³	16h	1
2026-06-02	56	12–167	18.5 µg/m³	16h	1
2026-06-01	46	18–82	12.7 µg/m³	10h	1
2026-05-31	27	2–114	7.7 µg/m³	11h	1
2026-05-30	60	13–138	18.3 µg/m³	14h	1
2026-05-29	94	12–415	46.4 µg/m³	16h	1
2026-05-28	67	7–170	26.0 µg/m³	12h	1
2026-05-27	85	29–187	32.6 µg/m³	17h	1
2026-05-26	103	22–250	54.6 µg/m³	14h	1
2026-05-25	107	13–278	56.8 µg/m³	12h	1
2026-05-24	105	4–500	83.2 µg/m³	18h	1
2026-05-23	84	23–170	29.2 µg/m³	19h	1
2026-05-22	83	12–170	31.3 µg/m³	16h	1
2026-05-21	78	14–153	26.2 µg/m³	19h	1
2026-05-20	73	11–189	30.0 µg/m³	16h	1

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