What is the air quality trend in São João da Madeira?

Over the past 8 days, São João da Madeira had an average AQI of 48 based on station measurements. The worst day was 2026-09-05 with AQI 103.

How is São João da Madeira air quality measured?

Air quality in São João da Madeira 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 São João da Madeira, Portugal

Name: São João da Madeira Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near São João da Madeira, Portugal.

Current AQI
Moderate Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

145h

PM2.5 Station

145h · 1 station

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-09-05	103	80–123	36.3 µg/m³	41.5	16h	1
2026-09-04	95	72–131	32.7 µg/m³	35.8	24h	1
2026-09-03	77	44–103	24.3 µg/m³	26.1	24h	1
2026-09-02	57	13–93	16.8 µg/m³	18.3	24h	1
2026-09-01	20	4–59	5.0 µg/m³	5.6	21h	1
2026-08-31	15	5–55	3.7 µg/m³	4.2	17h	1
2026-08-30	15	5–36	3.7 µg/m³	3.9	14h	1
2026-08-29	9	3–18	2.2 µg/m³	2.7	5h	1

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