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

Over the past 15 days, Santo Antônio de Posse had an average AQI of 55 based on station measurements. The worst day was 2026-07-17 with AQI 78.

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

334h

PM2.5 Station

334h · 6 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-07-22	50	46–52	12.2 µg/m³	3h	5
2026-07-21	40	18–103	10.5 µg/m³	24h	6
2026-07-20	45	24–79	11.8 µg/m³	24h	6
2026-07-19	49	31–74	12.8 µg/m³	24h	7
2026-07-18	53	26–81	14.1 µg/m³	24h	8
2026-07-17	78	35–162	26.1 µg/m³	24h	7
2026-07-16	51	22–100	14.3 µg/m³	24h	6
2026-07-15	58	29–117	16.5 µg/m³	24h	5
2026-07-14	58	12–157	18.2 µg/m³	24h	5
2026-07-13	60	17–238	23.6 µg/m³	24h	6
2026-07-12	76	15–344	31.6 µg/m³	24h	6
2026-07-11	61	14–164	19.3 µg/m³	24h	5
2026-07-10	58	10–123	16.8 µg/m³	24h	5
2026-07-09	40	21–71	10.1 µg/m³	23h	6
2026-07-08	53	14–137	15.1 µg/m³	20h	5

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