What is the air quality trend in Marinha Grande?

Over the past 7 days, Marinha Grande had an average AQI of 29 based on station measurements. The worst day was 2026-08-02 with AQI 48.

How is Marinha Grande air quality measured?

Air quality in Marinha Grande 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 Marinha Grande, Portugal

Name: Marinha Grande Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Marinha Grande, Portugal.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

148h

PM2.5 Station

148h · 2 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-08-07	34	8–193	13.8 µg/m³	15.7	19h	2
2026-08-06	16	8–34	3.9 µg/m³	12.5	20h	2
2026-08-05	25	8–54	6.2 µg/m³	8.0	23h	2
2026-08-04	23	6–48	5.4 µg/m³	10.7	22h	2
2026-08-03	29	12–58	7.1 µg/m³	14.0	23h	2
2026-08-02	48	14–494	27.7 µg/m³	14.7	23h	2
2026-08-01	32	13–57	7.7 µg/m³	16.9	18h	2

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