What is the air quality trend in Freire?

Over the past 21 days, Freire had an average AQI of 62 based on station measurements. The worst day was 2026-09-05 with AQI 95.

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

473h

PM2.5 Station

473h · 1 station

Temperature GFS model

80pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-05	95	61–161	34.1 µg/m³	8h	3
2026-09-04	71	21–166	24.2 µg/m³	24h	3
2026-09-03	43	15–85	11.5 µg/m³	23h	4
2026-09-02	39	8–94	10.2 µg/m³	23h	3
2026-09-01	73	14–176	26.0 µg/m³	23h	4
2026-08-31	52	28–138	14.5 µg/m³	24h	3
2026-08-30	79	23–239	32.3 µg/m³	24h	3
2026-08-29	54	17–168	16.8 µg/m³	24h	3
2026-08-28	31	8–60	7.7 µg/m³	24h	3
2026-08-27	50	19–93	13.0 µg/m³	24h	3
2026-08-26	41	7–81	10.4 µg/m³	24h	3
2026-08-25	38	4–94	10.0 µg/m³	24h	3
2026-08-24	63	12–184	21.3 µg/m³	24h	3
2026-08-23	74	12–199	28.8 µg/m³	24h	4
2026-08-22	75	17–173	26.2 µg/m³	24h	3
2026-08-21	86	15–254	37.4 µg/m³	24h	4
2026-08-20	59	12–152	18.3 µg/m³	24h	4
2026-08-19	75	18–169	26.1 µg/m³	24h	3
2026-08-18	80	25–156	26.6 µg/m³	24h	4
2026-08-17	72	27–168	25.0 µg/m³	24h	3
2026-08-16	54	32–106	15.1 µg/m³	12h	3

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