What is the air quality trend in Guareí?

Over the past 8 days, Guareí had an average AQI of 53 based on station measurements. The worst day was 2026-07-17 with AQI 68.

How is Guareí air quality measured?

Air quality in Guareí 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 Guareí, Brazil

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

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

Current AQI
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

117h

PM2.5 Station

117h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	45	45–45	10.8 µg/m³	1h	1
2026-07-21	45	9–181	15.1 µg/m³	18h	1
2026-07-20	43	16–104	11.9 µg/m³	17h	1
2026-07-19	41	17–78	10.4 µg/m³	17h	2
2026-07-18	53	21–109	14.5 µg/m³	15h	2
2026-07-17	68	18–295	29.9 µg/m³	15h	1
2026-07-16	65	3–245	28.4 µg/m³	18h	1
2026-07-15	65	15–195	24.1 µg/m³	16h	1

Back to Guareí Air Quality