What is the air quality trend in Santo Antônio de Posse?

Over the past 8 days, Santo Antônio de Posse had an average AQI of 52 based on station measurements. The worst day was 2026-07-17 with AQI 64.

How is Santo Antônio de Posse air quality measured?

Air quality in Santo Antônio de Posse 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 Santo Antônio de Posse, Brazil

Name: Santo Antônio de Posse Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Santo Antônio de Posse, Brazil.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

167h

PM2.5 Station

167h · 5 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	60	35–90	17.4 µg/m³	7h	4
2026-07-21	41	22–101	10.8 µg/m³	24h	7
2026-07-20	45	16–74	11.6 µg/m³	24h	7
2026-07-19	46	28–79	11.9 µg/m³	24h	7
2026-07-18	59	32–143	16.9 µg/m³	24h	8
2026-07-17	64	19–174	21.1 µg/m³	24h	6
2026-07-16	53	14–166	16.7 µg/m³	24h	5
2026-07-15	54	28–107	15.3 µg/m³	16h	6

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