Air Quality in Leiria, Portugal
Windy
19.7°C · 81.1% humidity
19.7°
Feels 19.7°
31
Good
Air quality is satisfactory. Enjoy outdoor activities.
Model forecast
Nearby Monitoring Stations
Leiria's air quality — share it
AQI Forecast
34
12am
34
34
31
3am
34
34
54
6am
34
34
34
9am
34
34
27
12pm
27
27
27
3pm
27
27
27
6pm
27
27
27
9pm
27
34
Air Quality Index Trend
35h · 1 stnLeiria'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.
81.1%
Humidity
96.7 km/h
Wind N
1017.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
7.35 µg/m³
PM10
27.4 µg/m³
050100150200300500
What is the weather forecast for Leiria?
Temperature & Precipitation
PM2.5 Trend
35h · 1 stationPM2.57.35 µg/m³
✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
What is the 7-day forecast for Leiria?
08-03
26.7° 18.3°
1.25 mm
08-04
22.1° 18.7°
0.62 mm
08-05
21.0° 19.0°
08-06
20.5° 17.8°
08-07
21.0° 18.0°
0.19 mm
08-08
21.1° 18.5°
08-09
21.1° 18.4°
Both models agree
Avg diff: 1.4°C
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Data sources: Weather forecast from ECMWF (IFS & CAMS models). AQI calculated using US EPA standard. Updated 2026-08-08T02:36 UTC.