What is the air quality trend in Grajaú?

Over the past 3 days, Grajaú had an average AQI of 54 based on station measurements. The worst day was 2026-10-20 with AQI 63.

How is Grajaú air quality measured?

Air quality in Grajaú 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 Grajaú, Brazil

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

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

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

44h

PM2.5 Station

44h · 1 station

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-10-22	38	38–38	9.1 µg/m³	9.5	1h	1
2026-10-21	61	4–106	18.9 µg/m³	20.0	21h	1
2026-10-20	63	7–105	19.4 µg/m³	21.0	22h	1

Back to Grajaú Air Quality