What is the air quality trend in Ovar?

Over the past 3 days, Ovar had an average AQI of 96 based on station measurements. The worst day was 2026-09-05 with AQI 104.

How is Ovar air quality measured?

Air quality in Ovar 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 Ovar, Portugal

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

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

108

Current AQI
Unhealthy for sensitive groups Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

47h

PM2.5 Station

47h · 1 station

Temperature GFS model

8pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	PM10 avg	Hours	Stations
2026-09-05	104	80–123	36.6 µg/m³	41.9	19h	1
2026-09-04	95	72–131	32.7 µg/m³	35.8	24h	1
2026-09-03	89	70–103	30.3 µg/m³	33.1	4h	1

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