What is the air quality trend in Arujá?

Over the past 8 days, Arujá had an average AQI of 53 based on station measurements. The worst day was 2026-07-16 with AQI 81.

How is Arujá air quality measured?

Air quality in Arujá 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 Arujá, Brazil

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

168h

PM2.5 Station

168h · 27 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-21	42	24–79	10.5 µg/m³	9.5	23h	24
2026-07-20	42	24–65	10.2 µg/m³	10.1	24h	22
2026-07-19	45	30–91	11.5 µg/m³	10.0	24h	23
2026-07-18	56	33–122	15.5 µg/m³	8.3	24h	24
2026-07-17	75	41–152	23.3 µg/m³	17.3	24h	21
2026-07-16	81	40–180	28.2 µg/m³	22.0	24h	20
2026-07-15	70	40–139	20.8 µg/m³	15.5	24h	21
2026-07-14	20	20–20	4.9 µg/m³	10.1	1h	1

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