Air Quality in Belém, Portugal
Drizzle
22.5°C · 52.9% humidity
22.5°
Feels 22.5°
20
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Belém's air quality — share it
AQI Forecast
Calibrated
30
12pm
33
31
20
3pm
25
29
31
6pm
33
35
16
9pm
9
10
10
12am
10
11
11
3am
11
11
11
6am
11
11
18
9am
18
18
Station readings
30
33
31
28
CAMS model
adj -16
54
54
54
54
54
54
54
54
54
34
27
27
27
27
27
27
27
27
27
27
27
34
34
34
Air Quality Index Trend
48h · 2 stnBelém'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.
52.9%
Humidity
43.4 km/h
Wind SSE
1015.4 hPa
Pressure
19.9
UV Extreme
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
4.66 µg/m³
PM10▲
41.15 µg/m³
050100150200300500
What is the weather forecast for Belém?
Temperature & Precipitation
PM2.5 Trend
48h · 2 stationsPM2.54.66 µg/m³
✓ WHO
Good
PM1041.15 µg/m³
Good
UV INDEX19.9
Extreme
Station readings (3 stations within 25 km)
4.66
Median
6.41
Average
4.1
Low
8.83
High
PM2.5 µg/m³ · Model: 13.5 · Bias: +8.8
What is the 7-day forecast for Belém?
05-30
22.5° 15.1°
0.5 mm
05-31
20.2° 15.7°
0.06 mm
06-01
22.4° 15.7°
06-02
20.2° 14.3°
0.56 mm
06-03
25.8° 17.4°
1.63 mm
06-04
22.5° 16.3°
06-05
27.3° 18.2°
Both models agree
Avg diff: 3.1°C
Where are air quality stations near Belém?
30
Laranjeiro, Almada, Portugal
51
Laranjeiro, Almada, Portugal
57
Entrecampos, Lisboa, Portugal
59
Olivais, Lisboa, Portugal
41
Olivais, Lisboa, Portugal
25
Paio Pires, Seixal
43
Mem Martins, Sintra, Portugal
38
Mem Martins, Sintra, Portugal
24
QSintra_Sensor1
33
Aldeia de Juzo
What cities are near Belém?
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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.