What is the air quality trend in Liberdade?

Over the past 8 days, Liberdade had an average AQI of 61 based on station measurements. The worst day was 2026-06-09 with AQI 105.

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.

123

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 3 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-06-09	105	84–128	37.2 µg/m³	47.3	14h	3
2026-06-08	78	25–124	25.5 µg/m³	31.6	24h	3
2026-06-07	98	52–143	33.6 µg/m³	41.4	24h	3
2026-06-06	66	31–165	20.4 µg/m³	24.0	24h	3
2026-06-05	20	8–55	4.9 µg/m³	6.2	24h	3
2026-06-04	36	15–75	9.2 µg/m³	10.3	24h	3
2026-06-03	41	15–73	10.5 µg/m³	11.7	24h	3
2026-06-02	49	31–62	12.4 µg/m³	13.6	10h	3

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