What is the air quality trend in Guaratinguetá?

Over the past 8 days, Guaratinguetá had an average AQI of 70 based on station measurements. The worst day was 2026-06-05 with AQI 86.

How is Guaratinguetá air quality measured?

Air quality in Guaratinguetá 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 Guaratinguetá, Brazil

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

81h

PM2.5 Station

81h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-06-09	43	43–43	10.4 µg/m³	1h	2
2026-06-08	63	8–140	19.9 µg/m³	14h	1
2026-06-07	73	11–140	24.7 µg/m³	11h	2
2026-06-06	76	14–177	29.5 µg/m³	12h	2
2026-06-05	86	15–222	35.9 µg/m³	14h	2
2026-06-04	63	5–245	33.9 µg/m³	8h	2
2026-06-03	80	16–145	27.3 µg/m³	11h	2
2026-06-02	80	22–151	26.2 µg/m³	10h	2

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