What is the air quality trend in Curicó?

Over the past 21 days, Curicó had an average AQI of 61 based on station measurements. The worst day was 2026-05-27 with AQI 90.

How is Curicó air quality measured?

Air quality in Curicó 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 Curicó, Chile

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

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

102

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

447h

PM2.5 Station

447h · 2 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	52	24–92	15.1 µg/m³	6h	3
2026-06-08	52	6–142	16.3 µg/m³	21h	3
2026-06-07	52	4–163	16.9 µg/m³	22h	2
2026-06-06	52	9–117	15.1 µg/m³	19h	3
2026-06-05	40	10–82	10.5 µg/m³	20h	3
2026-06-04	47	2–154	13.9 µg/m³	22h	3
2026-06-03	68	1–500	39.7 µg/m³	23h	2
2026-06-02	57	10–177	19.3 µg/m³	22h	2
2026-06-01	52	4–174	17.8 µg/m³	20h	2
2026-05-31	53	9–163	17.1 µg/m³	24h	2
2026-05-30	60	13–253	22.5 µg/m³	24h	3
2026-05-29	58	16–163	18.6 µg/m³	24h	2
2026-05-28	63	18–188	21.8 µg/m³	21h	3
2026-05-27	90	5–192	36.4 µg/m³	24h	2
2026-05-26	89	7–249	39.1 µg/m³	22h	3
2026-05-25	55	12–159	16.9 µg/m³	23h	3
2026-05-24	69	23–140	21.6 µg/m³	23h	3
2026-05-23	86	23–228	34.3 µg/m³	24h	3
2026-05-22	70	5–159	23.1 µg/m³	23h	3
2026-05-21	72	15–336	32.8 µg/m³	23h	3
2026-05-20	59	10–163	20.1 µg/m³	17h	3

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