Air Quality in Cascais, Portugal

Windy
18.7°C · 93.6% humidity
18.7°
Feels 18.7°
68
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
73 4am
73
73
68 7am
69
70
71 10am
72
72
72 1pm
93
93
93 4pm
93
93
73 7pm
73
73
73 10pm
73
73
73 1am
73
73
Station readings
71
73
75
75
CAMS model adj +39
34
34
34
34
34
34
34
34
34
34
54
54
54
54
54
34
34
34
34
34
34
34
34
34
AD 728×90

Air Quality Index Trend

48h · 1 stn

Cascais'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 Cascais is 1.3× the WHO 24-hour guideline of 15 µg/m³.

93.6%
Humidity
44.0 km/h
Wind NNW
1018.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
68
19.97 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Cascais?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.519.97 µg/m³ ×1.3 WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (2 stations within 25 km)
19.97
Median
14.02
Average
4.8
Low
23.24
High
PM2.5 µg/m³ · Model: 10.85 · Bias: -9.1

What is the 7-day forecast for Cascais?

07-22
20.5° 18.7°
07-23
20.1° 18.7°
1.5 mm
07-24
19.7° 18.6°
07-25
20.3° 18.7°
0.06 mm
07-26
19.6° 18.1°
07-27
20.1° 18.8°
0.06 mm
07-28
21.5° 18.7°
0.19 mm
Both models agree Avg diff: 2.3°C

Where are air quality stations near Cascais?

9
Aldeia de Juzo
4.6 km 26.1°C 52.0% RH PM2.5: 2.1 µg/m³ PM10: 2.5 µg/m³
75
QSintra_Sensor1
11.3 km 21.1°C 78.0% RH PM2.5: 23.3 µg/m³ PM10: 26.1 µg/m³
30
Mem Martins, Sintra, Portugal
11.7 km PM2.5: 7.2 µg/m³
21
Mem Martins, Sintra, Portugal
11.7 km PM2.5: 5.0 µg/m³
29
Laranjeiro, Almada, Portugal
23.2 km PM2.5: 7.0 µg/m³
20
Laranjeiro, Almada, Portugal
23.2 km PM2.5: 4.8 µg/m³
11
Entrecampos, Lisboa, Portugal
24.3 km PM2.5: 2.6 µg/m³

What cities are near Cascais?

68 Monte Estoril 68 Estoril 71 Alcabideche 64 Parede 64 São Domingos de Rana 60 Carcavelos 58 Oeiras 70 Rio de Mouro 55 Paço de Arcos 74 Sintra
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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.