Air Quality in Leiria, Portugal
Windy
18.7°C · 79.4% humidity
18.7°
Feels 18.7°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
Calibrated model
Nearby Monitoring Stations
Leiria's air quality — share it
AQI Forecast
54
1pm
54
54
38
4pm
43
46
48
7pm
50
51
32
10pm
32
33
33
1am
33
34
54
4am
54
34
34
7am
34
34
27
10am
34
34
Air Quality Index Trend
24h · 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.
79.4%
Humidity
87.4 km/h
Wind N
1017.3 hPa
Pressure
9.4
UV Very High
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.24 µg/m³
PM10
41.2 µg/m³
050100150200300500
What is the weather forecast for Leiria?
Temperature & Precipitation
PM2.5 Trend
24h · 1 stationPM2.59.24 µg/m³
✓ WHO
Good
PM1041.2 µg/m³
Good
UV INDEX9.4
Very High
What is the 7-day forecast for Leiria?
09-05
20.4° 18.7°
09-06
19.9° 18.4°
09-07
20.2° 16.6°
09-08
20.1° 18.6°
0.88 mm
09-09
22.5° 17.8°
0.06 mm
09-10
21.5° 18.7°
09-11
19.2° 18.0°
Both models agree
Avg diff: 2.2°C
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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 2026-09-05T15:06 UTC.