Air Quality in Porto, Portugal
Clear
25.0°C · 48.1% humidity
25.0°
Feels 25.0°
55
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations
Nearby Monitoring Stations
Porto's air quality — share it
AQI Forecast
Calibrated
51
12pm
51
71
55
3pm
60
43
45
6pm
47
48
49
9pm
49
50
50
12am
50
51
51
3am
51
51
51
6am
51
51
51
9am
51
51
Station readings
57
60
58
59
CAMS model
adj +17
34
34
54
54
54
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
34
Air Quality Index Trend
48h · 1 stnPorto'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.
48.1%
Humidity
7.1 km/h
Wind SW
1015.5 hPa
Pressure
19.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
13.95 µg/m³
PM10
34.3 µg/m³
050100150200300500
What is the weather forecast for Porto?
Temperature & Precipitation
PM2.5 Trend
48h · 1 stationPM2.513.95 µg/m³
✓ WHO
Moderate
PM1034.3 µg/m³
Good
UV INDEX19.9
Extreme
Station readings (2 stations within 25 km)
13.95
Median
12.71
Average
9.6
Low
15.83
High
PM2.5 µg/m³ · Model: 13.5 · Bias: -0.4
What is the 7-day forecast for Porto?
05-30
25.0° 13.5°
05-31
26.1° 15.3°
0.88 mm
06-01
25.0° 13.8°
06-02
18.9° 11.4°
1.44 mm
06-03
25.3° 17.1°
6.44 mm
06-04
20.7° 15.2°
0.44 mm
06-05
28.3° 18.2°
0.69 mm
Both models agree
Avg diff: 3.3°C
Where are air quality stations near Porto?
50
Sobreiras-Lordelo do Ouro, Porto, Portugal
30
Sobreiras-Lordelo do Ouro, Porto, Portugal
59
AirGradient O-1PST
33
Paços de Ferreira, Paços de Ferreira, Portugal
19
Paços de Ferreira, Paços de Ferreira, Portugal
What cities are near Porto?
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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 2026-05-30T14:23 UTC.