Air Quality in Oeiras, 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

Oeiras'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 Oeiras 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
15.62 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

What is the weather forecast for Oeiras?

Temperature & Precipitation

PM2.5 Trend

48h · 1 station
PM2.515.62 µg/m³ ✓ WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (2 stations within 25 km)
15.62
Median
14.02
Average
4.8
Low
23.24
High
PM2.5 µg/m³ · Model: 13.5 · Bias: -2.1

What is the 7-day forecast for Oeiras?

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 Oeiras?

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

What cities are near Oeiras?

60 Carcavelos 55 Paço de Arcos 64 São Domingos de Rana 64 Parede 40 Linda-a-Velha 42 Carnaxide 36 Algés 58 Massamá 68 Estoril 68 Monte Estoril
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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 2026-07-22T06:43 UTC.