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 76 based on station measurements. The worst day was 2026-05-27 with AQI 110.

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
Moderate CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

331h

PM2.5 Station

331h · 5 stations

Temperature GFS model

56pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-05-30	51	24–81	13.8 µg/m³	18h	5
2026-05-29	63	20–115	18.3 µg/m³	24h	5
2026-05-28	69	35–156	21.7 µg/m³	22h	5
2026-05-27	110	33–415	52.0 µg/m³	24h	5
2026-05-26	90	26–153	30.5 µg/m³	24h	5
2026-05-25	95	18–173	34.2 µg/m³	24h	5
2026-05-24	77	13–155	25.4 µg/m³	24h	5
2026-05-23	83	20–165	28.4 µg/m³	24h	5
2026-05-22	86	13–168	29.7 µg/m³	24h	6
2026-05-21	80	30–159	26.3 µg/m³	24h	5
2026-05-20	81	21–188	29.5 µg/m³	24h	5
2026-05-19	75	26–234	29.7 µg/m³	24h	6
2026-05-18	74	15–148	23.3 µg/m³	24h	5
2026-05-17	72	11–441	33.4 µg/m³	23h	5
2026-05-16	42	7–77	12.6 µg/m³	4h	2

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