What is the air quality trend in Brás?

Over the past 8 days, Brás had an average AQI of 54 based on station measurements. The worst day was 2026-10-18 with AQI 85.

How is Brás air quality measured?

Air quality in Brás 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 Brás, Brazil

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

166h

PM2.5 Station

166h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-22	60	57–62	16.3 µg/m³	17.6	2h	2
2026-10-21	59	18–98	17.7 µg/m³	19.9	24h	2
2026-10-20	62	19–97	18.4 µg/m³	20.6	24h	2
2026-10-19	59	39–94	16.4 µg/m³	18.1	24h	2
2026-10-18	85	8–154	29.8 µg/m³	37.4	24h	2
2026-10-17	30	1–93	7.7 µg/m³	8.8	23h	2
2026-10-16	43	7–141	14.1 µg/m³	17.9	24h	3
2026-10-15	39	10–103	10.9 µg/m³	12.3	21h	2

Back to Brás Air Quality