What is the air quality trend in Leça da Palmeira?

Over the past 3 days, Leça da Palmeira had an average AQI of 49 based on station measurements. The worst day was 2026-07-22 with AQI 51.

How is Leça da Palmeira air quality measured?

Air quality in Leça da Palmeira 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 Leça da Palmeira, Portugal

Name: Leça da Palmeira Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Leça da Palmeira, Portugal.

Current AQI
Good CAMS model

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

49h

PM2.5 Station

49h · 4 stations

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-07-22	51	40–55	12.5 µg/m³	12.5	11h	5
2026-07-21	49	38–60	11.9 µg/m³	11.9	24h	5
2026-07-20	48	39–53	11.6 µg/m³	11.6	14h	4

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