What is the air quality trend in Melipilla?

Over the past 8 days, Melipilla had an average AQI of 73 based on station measurements. The worst day was 2026-07-19 with AQI 117.

How is Melipilla air quality measured?

Air quality in Melipilla 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 Melipilla, Chile

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

169h

PM2.5 Station

169h · 19 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	87	78–96	29.1 µg/m³	2h	22
2026-07-21	69	15–100	21.7 µg/m³	24h	22
2026-07-20	88	27–152	29.4 µg/m³	24h	22
2026-07-19	117	75–160	42.5 µg/m³	24h	22
2026-07-18	34	12–60	8.4 µg/m³	24h	18
2026-07-17	43	12–71	11.3 µg/m³	24h	21
2026-07-16	55	14–135	16.2 µg/m³	24h	22
2026-07-15	97	21–138	33.8 µg/m³	23h	21

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