Air Quality in Massamá, Portugal

Cloudy
18.3°C · 89.0% humidity
18.3°
Feels 18.3°
58
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
63 4am
83
83
58 7am
65
50
54 10am
56
58
60 1pm
81
81
82 4pm
82
62
63 7pm
63
63
63 10pm
56
56
56 1am
56
56
Station readings
71
73
75
75
CAMS model adj +29
34
54
54
54
54
34
34
34
34
34
54
54
54
54
34
34
34
34
34
27
27
27
27
27
AD 728×90

Air Quality Index Trend

48h · 1 stn

Massamá'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. Current PM2.5 concentration in Massamá is 1.0× the WHO 24-hour guideline of 15 µg/m³.

89.0%
Humidity
23.9 km/h
Wind NNW
1018.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
58
15.43 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Massamá?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.515.43 µg/m³ ✓ WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (2 stations within 25 km)
15.43
Median
14.02
Average
4.8
Low
23.24
High
PM2.5 µg/m³ · Model: 13.5 · Bias: -1.9

What is the 7-day forecast for Massamá?

07-22
26.7° 18.3°
07-23
33.2° 19.2°
0.44 mm
07-24
25.3° 18.6°
07-25
24.3° 18.4°
07-26
26.5° 16.6°
07-27
27.2° 18.8°
07-28
38.0° 18.4°
Both models agree Avg diff: 2.7°C

Where are air quality stations near Massamá?

21
Mem Martins, Sintra, Portugal
6.8 km PM2.5: 5.0 µg/m³
30
Mem Martins, Sintra, Portugal
6.8 km PM2.5: 7.2 µg/m³
75
QSintra_Sensor1
9.8 km 21.1°C 78.0% RH PM2.5: 23.3 µg/m³ PM10: 26.1 µg/m³
11
Entrecampos, Lisboa, Portugal
11.5 km PM2.5: 2.6 µg/m³
20
Laranjeiro, Almada, Portugal
14.6 km PM2.5: 4.8 µg/m³
29
Laranjeiro, Almada, Portugal
14.6 km PM2.5: 7.0 µg/m³
9
Aldeia de Juzo
14.9 km 26.1°C 52.0% RH PM2.5: 2.1 µg/m³ PM10: 2.5 µg/m³
24
Olivais, Lisboa, Portugal
15.1 km PM2.5: 5.8 µg/m³
38
Olivais, Lisboa, Portugal
15.1 km PM2.5: 9.1 µg/m³
17
Paio Pires, Seixal
22.7 km PM2.5: 4.0 µg/m³ PM10: 16.0 µg/m³

What cities are near Massamá?

64 Cacém 49 Queluz 55 Belas 49 Olival 42 Carnaxide 70 Rio de Mouro 36 Amadora 36 Falagueira 40 Linda-a-Velha 31 Alfragide
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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 2026-07-22T06:42 UTC.