Air Quality in Viana do Castelo, Portugal
Windy
14.3°C · 73.6% humidity
14.3°
Feels 14.3°
31
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Viana do Castelo's air quality — share it
AQI Forecast
25
5am
25
25
31
8am
29
28
29
11am
29
28
28
2pm
28
27
27
5pm
27
27
27
8pm
27
27
27
11pm
27
27
27
2am
27
27
Air Quality Index Trend
48h · 4 stnViana do Castelo's air quality is shaped by traffic emissions and residential heating. Pollution levels tend to peak during winter months when cold air traps emissions close to ground level.
73.6%
Humidity
78.4 km/h
Wind NNE
1017.5 hPa
Pressure
2.2
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.46 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Viana do Castelo?
Temperature & Precipitation
PM2.5 Trend
48h · 4 stationsPM2.57.46 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX2.2
Moderate
What is the 7-day forecast for Viana do Castelo?
06-09
17.1° 14.3°
06-10
16.1° 15.6°
1.56 mm
06-11
22.5° 18.2°
0.13 mm
06-12
20.9° 16.1°
0.75 mm
06-13
17.7° 16.4°
0.06 mm
06-14
17.9° 16.3°
1.81 mm
06-15
19.6° 16.5°
Both models agree
Avg diff: 3.8°C
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Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-06-09T07:09 UTC.