What is the air quality trend in Freire?

Over the past 15 days, Freire had an average AQI of 69 based on station measurements. The worst day was 2026-07-12 with AQI 112.

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 Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

317h

PM2.5 Station

317h · 1 station

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	39	8–64	10.1 µg/m³	7h	2
2026-07-21	92	8–320	41.6 µg/m³	21h	3
2026-07-20	67	17–247	27.6 µg/m³	21h	2
2026-07-19	68	11–178	24.4 µg/m³	24h	2
2026-07-18	54	17–112	15.0 µg/m³	22h	2
2026-07-17	56	17–104	15.6 µg/m³	20h	2
2026-07-16	65	8–491	33.1 µg/m³	23h	2
2026-07-15	37	4–71	9.6 µg/m³	23h	2
2026-07-14	70	4–178	25.7 µg/m³	23h	2
2026-07-13	104	39–414	54.8 µg/m³	23h	2
2026-07-12	112	12–305	63.5 µg/m³	23h	2
2026-07-11	91	12–257	42.8 µg/m³	24h	2
2026-07-10	79	21–214	31.5 µg/m³	23h	2
2026-07-09	71	26–164	23.2 µg/m³	24h	2
2026-07-08	36	4–93	9.4 µg/m³	16h	2

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