Air Quality in São Martinho, Portugal
Cloudy
15.3°C · 78.3% humidity
15.3°
Feels 15.3°
10
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
São Martinho's air quality — share it
AQI Forecast
54
1pm
54
54
10
4pm
22
31
38
7pm
42
46
48
10pm
50
51
52
1am
52
53
53
4am
53
54
54
7am
54
54
54
10am
54
54
Air Quality Index Trend
27h · 2 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.
78.3%
Humidity
21.5 km/h
Wind NW
1022.8 hPa
Pressure
17.4
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
2.28 µg/m³
PM10▲
20.55 µg/m³
050100150200300500
What is the weather forecast for São Martinho?
Temperature & Precipitation
PM2.5 Trend
27h · 2 stationsPM2.52.28 µg/m³
✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX17.4
Extreme
Station readings (2 stations within 25 km)
2.28
Median
3.45
Average
1.9
Low
5.0
High
PM2.5 µg/m³ · Model: 10.0 · Bias: +7.7
What is the 7-day forecast for São Martinho?
05-30
15.3° 7.7°
0.19 mm
05-31
17.9° 10.4°
1.25 mm
06-01
16.3° 12.0°
0.06 mm
06-02
17.2° 8.6°
0.06 mm
06-03
20.5° 8.7°
0.06 mm
06-04
18.7° 12.7°
0.06 mm
06-05
20.0° 12.0°
0.06 mm
Both models agree
Avg diff: 5.6°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 2026-05-30T15:28 UTC.