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

Over the past 17 days, São João da Madeira had an average AQI of 46 based on station measurements. The worst day was with AQI .

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
Good

48 Hours 7 Days 14 Days 20 Days

PM2.5 Trend

263h · 1 station

Daily Summary

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-04-11	27	1–76	7.2 µg/m³	8.9	13h	1
2026-04-10	60	10–163	18.2 µg/m³	20.1	24h	1
2026-04-09	73	52–135	22.5 µg/m³	25.0	15h	1
2026-04-08	15	5–38	3.7 µg/m³	4.1	8h	1
2026-04-07	9	2–36	2.3 µg/m³	3.1	13h	1
2026-04-06	16	1–30	3.8 µg/m³	4.3	6h	1
2026-04-04	82	20–139	27.6 µg/m³	30.3	15h	1
2026-04-03	58	1–120	17.8 µg/m³	19.1	24h	1
2026-04-02	64	6–129	21.6 µg/m³	24.3	20h	1
2026-04-01	41	6–89	11.5 µg/m³	12.1	12h	1
2026-03-31	46	10–99	13.5 µg/m³	14.8	19h	1
2026-03-30	63	17–152	20.1 µg/m³	22.0	10h	1
2026-03-29	35	3–88	10.4 µg/m³	11.2	22h	1
2026-03-28	45	3–98	13.8 µg/m³	14.8	22h	1
2026-03-27	32	3–94	9.2 µg/m³	10.1	18h	1
2026-03-26	66	4–152	21.7 µg/m³	24.4	16h	1
2026-03-25	58	17–111	17.5 µg/m³	18.6	6h	1

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