What is the air quality in Viana do Castelo today?

The current Air Quality Index (AQI) in Viana do Castelo is 30 (Good). PM2.5 concentration is 7.24 µg/m³.

What is the temperature in Viana do Castelo right now?

The current temperature in Viana do Castelo is 16.5°C (feels like 16.5°C). Humidity is 72.8% and wind speed is 52.7 km/h.

Is it safe to go outside in Viana do Castelo?

Air quality is satisfactory. Enjoy outdoor activities. The UV Index is 0.0 (Low).

Air Quality in Viana do Castelo, Portugal

Windy

16.5°C · 72.8% humidity

16.5°

Feels 16.5°

Good

Air quality is satisfactory. Enjoy outdoor activities.

Calibrated model

Nearby Monitoring Stations

AQI Forecast

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Air Quality Index Trend

45h · 3 stn

View full history →

Viana 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.

72.8%

Humidity

52.7 km/h

Wind SSE

1015.2 hPa

Pressure

0.0

UV Low

GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲

7.24 µg/m³

PM10

13.7 µg/m³

050100150200300500

What is the weather forecast for Viana do Castelo?

Temperature & Precipitation

PM2.5 Trend

45h · 3 stations

PM2.57.24 µg/m³ ✓ WHO

Good

PM1013.7 µg/m³

Good

UV INDEX0.0

Low

What is the 7-day forecast for Viana do Castelo?

10-21

16.5° 15.4°

10-22

19.1° 17.2°

0.5 mm

10-23

18.1° 14.5°

7.88 mm

10-24

17.3° 15.5°

10-25

17.2° 16.2°

10-26

16.3° 14.2°

16.19 mm

10-27

16.9° 14.4°

Both models agree Avg diff: 2.0°C

What cities are near Viana do Castelo?

31 Esposende 32 Ponte de Lima 43 Barcelos 28 Pedroso 27 Póvoa de Varzim 42 Braga 31 Arcos de Valdevez 24 Vila do Conde 43 Bairro Novo 26 Tui

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ModerateAQI > 50 Unhealthy for Sensitive GroupsAQI > 100 UnhealthyAQI > 150 Very UnhealthyAQI > 200

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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 2026-10-21T17:02 UTC.