What is the air quality trend in Machalí?

Over the past 8 days, Machalí had an average AQI of 50 based on station measurements. The worst day was 2026-07-17 with AQI 63.

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.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

134h

PM2.5 Station

134h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	59	45–67	16.7 µg/m³	3h	4
2026-07-21	35	14–57	8.4 µg/m³	19h	3
2026-07-20	41	15–231	16.0 µg/m³	21h	2
2026-07-19	52	21–303	21.2 µg/m³	22h	3
2026-07-18	43	17–71	10.9 µg/m³	20h	2
2026-07-17	63	33–206	22.6 µg/m³	18h	2
2026-07-16	54	16–111	14.9 µg/m³	19h	3
2026-07-15	54	34–125	14.9 µg/m³	12h	3

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