Air Quality in São Martinho, Portugal
Cloudy
15.5°C · 73.2% humidity
15.5°
Feels 15.5°
22
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
São Martinho's air quality — share it
AQI Forecast
54
5am
54
54
22
8am
31
38
42
11am
46
48
50
2pm
51
52
52
5pm
53
53
53
8pm
54
54
54
11pm
54
54
54
2am
54
54
Air Quality Index Trend
23h · 1 stnSão Martinho'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.
73.2%
Humidity
15.2 km/h
Wind NNW
1021.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
5.3 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for São Martinho?
Temperature & Precipitation
PM2.5 Trend
23h · 1 stationPM2.55.3 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
5.3
Median
5.3
Average
5.3
Low
5.3
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +4.7
What is the 7-day forecast for São Martinho?
07-22
22.8° 15.5°
0.56 mm
07-23
24.9° 14.6°
0.19 mm
07-24
22.1° 12.8°
0.25 mm
07-25
22.8° 14.0°
07-26
22.7° 17.5°
0.31 mm
07-27
25.0° 13.3°
0.25 mm
07-28
32.8° 15.9°
0.19 mm
Both models agree
Avg diff: 4.2°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 2026-07-22T07:49 UTC.