Air Quality in São Tiago de Custoias, Portugal

Overcast
17.5°C · 93.9% humidity
17.5°
Feels 17.5°
16
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

AQI Forecast
66 7am
66
54
16 10am
7
14
20 1pm
24
27
29 4pm
30
31
32 7pm
33
33
33 10pm
54
54
54 1am
54
54
66 4am
66
66
AD 728×90

Air Quality Index Trend

49h · 4 stn

São Tiago de Custoias'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.

93.9%
Humidity
20.6 km/h
Wind ESE
1018.2 hPa
Pressure
4.4
UV Moderate
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
16
3.8 µg/m³
PM10▲
31
34.3 µg/m³
050100150200300500

What is the weather forecast for São Tiago de Custoias?

Temperature & Precipitation

PM2.5 Trend

49h · 4 stations
PM2.53.8 µg/m³ ✓ WHO
Good
PM1034.3 µg/m³
Good
UV INDEX4.4
Moderate
AD 300×250
Station readings (1 station within 25 km)
3.8
Median
3.8
Average
3.8
Low
3.8
High
PM2.5 µg/m³ · Model: 16.35 · Bias: +12.6

What is the 7-day forecast for São Tiago de Custoias?

07-22
18.8° 17.5°
07-23
18.9° 17.4°
4.81 mm
07-24
17.7° 17.4°
07-25
19.5° 17.2°
0.13 mm
07-26
20.3° 14.8°
07-27
19.1° 17.1°
0.31 mm
07-28
19.6° 17.4°
Both models agree Avg diff: 3.7°C

Where are air quality stations near São Tiago de Custoias?

34
Sobreiras-Lordelo do Ouro, Porto, Portugal
6.2 km PM2.5: 8.2 µg/m³
29
Sobreiras-Lordelo do Ouro, Porto, Portugal
6.2 km PM2.5: 7.0 µg/m³
21
AirGradient O-1PST
19.2 km 38.0°C 44.1% RH PM2.5: 5.0 µg/m³ PM10: 2.8 µg/m³
24
Paços de Ferreira, Paços de Ferreira, Portugal
23.0 km PM2.5: 5.8 µg/m³
30
Paços de Ferreira, Paços de Ferreira, Portugal
23.0 km PM2.5: 7.2 µg/m³

What cities are near São Tiago de Custoias?

16 Leça do Bailio 16 São Mamede de Infesta 16 Senhora da Hora 16 Maia 16 Paranhos 16 Aldoar 16 Águas Santas 16 Matosinhos 16 Vermoim 16 Lordelo do Ouro
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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 2026-07-22T09:01 UTC.