Air Quality in Sintra, Portugal

Windy
19.4°C · 83.2% humidity
19.4°
Feels 19.4°
2
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations

Nearby Monitoring Stations

AQI Forecast Calibrated
6 12am
6
6
2 3am
6
6
6 6am
6
6
6 9am
6
0
0 12pm
6
26
6 3pm
6
0
0 6pm
0
0
0 9pm
0
0
Station readings
8
7
12
CAMS model adj -28
34
34
34
34
34
34
34
34
34
34
34
27
27
34
54
34
34
27
27
27
27
27
27
27
AD 728×90

Air Quality Index Trend

46h · 1 stn

Sintra'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.

83.2%
Humidity
152.3 km/h
Wind NNW
1017.2 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5
2
0.62 µg/m³
PM10▲
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Sintra?

Temperature & Precipitation

PM2.5 Trend

46h · 1 station
PM2.50.62 µg/m³ ✓ WHO
Good
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
Station readings (2 stations within 25 km)
0.62
Median
0.63
Average
0.62
Low
0.65
High
PM2.5 µg/m³ · Model: 7.1 · Bias: +6.5

What is the 7-day forecast for Sintra?

08-03
24.8° 19.1°
0.19 mm
08-04
21.8° 19.2°
0.19 mm
08-05
20.6° 19.5°
08-06
20.2° 18.7°
08-07
21.1° 19.3°
08-08
20.8° 19.6°
0.06 mm
08-09
21.1° 19.6°
Both models agree Avg diff: 1.7°C

Where are air quality stations near Sintra?

–
QSintra_Sensor1
0.9 km 24.0°C 51.4% RH PM2.5: 0.0 µg/m³ PM10: 0.0 µg/m³
31
Mem Martins, Sintra, Portugal
3.2 km PM2.5: 7.4 µg/m³
88
Mem Martins, Sintra, Portugal
3.2 km PM2.5: 29.7 µg/m³
12
Aldeia de Juzo
10.0 km 28.8°C 42.0% RH PM2.5: 2.8 µg/m³ PM10: 3.3 µg/m³
21
Entrecampos, Lisboa, Portugal
20.7 km PM2.5: 5.0 µg/m³
21
Entrecampos, Lisboa, Portugal
20.7 km PM2.5: 5.0 µg/m³
6
Olivais, Lisboa, Portugal
23.7 km PM2.5: 1.4 µg/m³
13
Laranjeiro, Almada, Portugal
24.5 km PM2.5: 3.1 µg/m³
40
Laranjeiro, Almada, Portugal
24.5 km PM2.5: 9.6 µg/m³

What cities are near Sintra?

2 Algueirão 2 Rio de Mouro 2 Cacém 2 Alcabideche 2 Massamá 2 Belas 2 Estoril 2 Monte Estoril 2 São Domingos de Rana 2 Olival
Get AQI alerts for Sintra

Notify me when air quality reaches:

Free · No account · Unsubscribe any time

Data sources: AQI from ground-level monitoring stations via AQICN. Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T02:35 UTC.