What is the air quality trend in Freire?

Over the past 8 days, Freire had an average AQI of 61 based on station measurements. The worst day was 2026-07-21 with AQI 98.

How is Freire air quality measured?

Air quality in Freire 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 Freire, Chile

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

152h

PM2.5 Station

152h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	45	40–50	10.8 µg/m³	2h	2
2026-07-21	98	21–196	43.8 µg/m³	23h	2
2026-07-20	62	10–247	24.2 µg/m³	24h	2
2026-07-19	76	20–210	31.7 µg/m³	23h	2
2026-07-18	59	17–114	17.4 µg/m³	23h	2
2026-07-17	61	2–162	19.1 µg/m³	18h	1
2026-07-16	55	17–164	17.6 µg/m³	21h	2
2026-07-15	36	4–66	9.1 µg/m³	18h	2

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