What is the air quality trend in Ubatuba?

Over the past 8 days, Ubatuba had an average AQI of 39 based on station measurements. The worst day was 2026-09-20 with AQI 71.

How is Ubatuba air quality measured?

Air quality in Ubatuba 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 Ubatuba, Brazil

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

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

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

58h

PM2.5 Station

58h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-09-22	30	30–30	7.2 µg/m³	1h	1
2026-09-21	35	5–163	12.0 µg/m³	11h	2
2026-09-20	71	15–183	35.6 µg/m³	4h	1
2026-09-19	38	15–68	9.6 µg/m³	12h	1
2026-09-18	41	9–68	10.5 µg/m³	12h	1
2026-09-17	42	13–99	12.1 µg/m³	11h	1
2026-09-16	45	17–93	13.6 µg/m³	6h	2
2026-09-15	17	17–17	4.1 µg/m³	1h	1

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