What is the air quality trend in Hualqui?

Over the past 21 days, Hualqui had an average AQI of 59 based on station measurements. The worst day was 2026-05-20 with AQI 81.

How is Hualqui air quality measured?

Air quality in Hualqui 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 Hualqui, Chile

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

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

223

Current AQI
Very unhealthy Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

476h

PM2.5 Station

476h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	55	55–55	14.0 µg/m³	1h	1
2026-05-29	62	19–159	19.0 µg/m³	24h	9
2026-05-28	47	17–99	13.3 µg/m³	24h	11
2026-05-27	62	15–154	19.1 µg/m³	24h	10
2026-05-26	80	20–178	28.2 µg/m³	24h	10
2026-05-25	68	26–136	21.3 µg/m³	24h	11
2026-05-24	63	28–120	18.3 µg/m³	24h	12
2026-05-23	56	24–137	15.6 µg/m³	24h	10
2026-05-22	63	22–134	18.4 µg/m³	24h	8
2026-05-21	60	18–162	19.0 µg/m³	24h	9
2026-05-20	81	21–168	28.8 µg/m³	24h	9
2026-05-19	65	18–166	21.0 µg/m³	24h	7
2026-05-18	57	9–155	17.5 µg/m³	24h	6
2026-05-17	66	11–172	22.3 µg/m³	22h	6
2026-05-16	49	8–92	13.7 µg/m³	23h	12
2026-05-15	51	15–80	13.9 µg/m³	24h	14
2026-05-14	47	15–83	12.4 µg/m³	24h	14
2026-05-13	52	26–89	13.9 µg/m³	24h	15
2026-05-12	59	18–102	17.1 µg/m³	24h	14
2026-05-11	59	14–130	17.6 µg/m³	24h	14
2026-05-10	50	17–88	13.8 µg/m³	22h	14

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