What is the air quality trend in Vallenar?

Over the past 20 days, Vallenar had an average AQI of 46 based on station measurements. The worst day was 2026-05-22 with AQI 82.

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.

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

265h

PM2.5 Station

265h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	56	15–164	19.5 µg/m³	14h	1
2026-05-28	30	12–97	8.2 µg/m³	15h	1
2026-05-27	56	12–210	22.9 µg/m³	13h	1
2026-05-26	46	2–155	16.2 µg/m³	8h	1
2026-05-25	36	3–81	9.8 µg/m³	17h	1
2026-05-24	53	8–144	17.1 µg/m³	14h	1
2026-05-23	23	7–45	5.5 µg/m³	13h	1
2026-05-22	82	21–206	43.1 µg/m³	11h	2
2026-05-21	28	7–67	7.2 µg/m³	17h	1
2026-05-20	69	7–157	23.8 µg/m³	12h	1
2026-05-19	32	11–78	8.7 µg/m³	11h	1
2026-05-18	33	9–80	9.2 µg/m³	6h	1
2026-05-17	72	21–155	24.8 µg/m³	6h	1
2026-05-16	36	4–82	9.9 µg/m³	12h	1
2026-05-15	40	8–112	11.7 µg/m³	18h	1
2026-05-14	37	8–91	9.9 µg/m³	16h	1
2026-05-13	45	4–170	16.5 µg/m³	19h	1
2026-05-12	53	6–117	16.0 µg/m³	14h	2
2026-05-11	56	8–151	17.4 µg/m³	14h	1
2026-05-10	47	7–123	13.7 µg/m³	15h	1

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