What is the air quality trend in Jacareí?

Over the past 8 days, Jacareí had an average AQI of 51 based on station measurements. The worst day was 2026-07-16 with AQI 74.

How is Jacareí air quality measured?

Air quality in Jacareí 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 Jacareí, Brazil

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

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

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

157h

PM2.5 Station

157h · 5 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-21	46	17–84	12.8 µg/m³	19h	4
2026-07-20	38	2–76	9.9 µg/m³	23h	2
2026-07-19	46	25–89	11.8 µg/m³	22h	3
2026-07-18	49	12–102	13.1 µg/m³	21h	3
2026-07-17	55	19–152	15.7 µg/m³	24h	4
2026-07-16	74	28–251	28.5 µg/m³	22h	3
2026-07-15	51	23–142	13.9 µg/m³	23h	4
2026-07-14	55	50–63	14.4 µg/m³	3h	3

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