What is the air quality trend in Chiguayante?

Over the past 15 days, Chiguayante had an average AQI of 62 based on station measurements. The worst day was 2026-05-20 with AQI 81.

How is Chiguayante air quality measured?

Air quality in Chiguayante 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 Chiguayante, Chile

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

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

153

Current AQI
Unhealthy Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

332h

PM2.5 Station

332h · 1 station

Temperature GFS model

56pt

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	47	8–92	12.8 µg/m³	21h	12

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