What is the air quality trend in Liberdade?

Over the past 8 days, Liberdade had an average AQI of 63 based on station measurements. The worst day was 2026-08-29 with AQI 102.

How is Liberdade air quality measured?

Air quality in Liberdade 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 Liberdade, Brazil

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

Historical PM2.5 and AQI trend from monitoring stations near Liberdade, Brazil.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

160h

PM2.5 Station

160h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-09-05	75	16–111	24.4 µg/m³	28.8	16h	2
2026-09-04	62	18–121	19.0 µg/m³	22.3	24h	2
2026-09-03	58	22–95	16.6 µg/m³	20.0	24h	2
2026-09-02	28	4–67	7.1 µg/m³	8.7	19h	1
2026-09-01	38	7–116	10.8 µg/m³	12.9	23h	2
2026-08-31	60	2–126	18.8 µg/m³	21.7	24h	2
2026-08-30	87	3–127	29.9 µg/m³	36.7	24h	2
2026-08-29	102	85–124	35.8 µg/m³	42.7	6h	2

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