What is the air quality trend in Freire?

Over the past 20 days, Freire had an average AQI of 61 based on station measurements. The worst day was 2026-05-25 with AQI 113.

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

458h

PM2.5 Station

458h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-29	79	23–176	27.9 µg/m³	24h	3
2026-05-28	56	12–170	18.3 µg/m³	24h	3
2026-05-27	109	19–259	53.3 µg/m³	24h	3
2026-05-26	91	21–164	32.8 µg/m³	24h	3
2026-05-25	113	12–218	56.5 µg/m³	24h	3
2026-05-24	59	4–190	22.0 µg/m³	23h	3
2026-05-23	55	2–319	24.0 µg/m³	24h	3
2026-05-22	51	8–95	15.5 µg/m³	23h	3
2026-05-21	30	4–82	7.9 µg/m³	22h	3
2026-05-20	74	4–237	31.0 µg/m³	24h	3
2026-05-19	77	27–160	25.6 µg/m³	24h	3
2026-05-18	61	24–205	21.7 µg/m³	24h	3
2026-05-17	47	12–133	12.9 µg/m³	23h	2
2026-05-16	44	15–139	11.9 µg/m³	22h	4
2026-05-15	43	6–115	12.0 µg/m³	21h	3
2026-05-14	51	3–117	14.4 µg/m³	21h	3
2026-05-13	47	8–96	13.0 µg/m³	23h	3
2026-05-12	47	10–90	13.2 µg/m³	22h	3
2026-05-11	51	13–119	15.0 µg/m³	22h	4
2026-05-10	49	17–89	13.9 µg/m³	20h	3

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