What is the air quality trend in Machalí?

Over the past 21 days, Machalí had an average AQI of 54 based on station measurements. The worst day was 2026-06-09 with AQI 108.

How is Machalí air quality measured?

Air quality in Machalí 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 Machalí, Chile

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

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

129

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

402h

PM2.5 Station

402h · 3 stations

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	108	26–163	44.7 µg/m³	3h	2
2026-06-08	47	6–109	13.4 µg/m³	21h	2
2026-06-07	38	2–99	10.7 µg/m³	20h	2
2026-06-06	42	4–164	14.2 µg/m³	21h	2
2026-06-05	42	1–82	11.3 µg/m³	20h	3
2026-06-04	41	4–106	12.2 µg/m³	21h	2
2026-06-03	46	5–176	15.4 µg/m³	20h	2
2026-06-02	36	6–86	9.7 µg/m³	20h	3
2026-06-01	33	11–152	9.1 µg/m³	20h	2
2026-05-31	32	3–80	8.3 µg/m³	20h	2
2026-05-30	54	5–111	16.0 µg/m³	19h	2
2026-05-29	58	26–142	16.8 µg/m³	13h	3
2026-05-28	58	13–123	17.1 µg/m³	20h	3
2026-05-27	76	14–167	26.0 µg/m³	22h	2
2026-05-26	77	15–162	26.5 µg/m³	20h	2
2026-05-25	46	13–93	13.1 µg/m³	22h	2
2026-05-24	76	5–174	26.7 µg/m³	21h	3
2026-05-23	64	17–171	21.9 µg/m³	23h	3
2026-05-22	58	11–164	19.1 µg/m³	19h	2
2026-05-21	64	8–356	29.5 µg/m³	20h	2
2026-05-20	45	13–91	12.5 µg/m³	17h	3

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