Air Quality in Trieste, Italy
Drizzle
14.7°C · 78.6% humidity
14.7°
Feels 14.7°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Trieste's air quality — share it
AQI Forecast
34
11pm
34
54
38
2am
34
34
27
5am
27
27
27
8am
27
27
25
11am
25
25
27
2pm
25
25
25
5pm
27
27
27
8pm
27
34
Air Quality Index Trend
48h · 2 stnTrieste'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 Trieste is 1.8× the WHO annual guideline of 5 µg/m³.
78.6%
Humidity
71.4 km/h
Wind NE
1012.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.1 µg/m³
PM10
27.4 µg/m³
050100150200300500
What is the weather forecast for Trieste?
Temperature & Precipitation
PM2.5 Trend
48h · 2 stationsPM2.59.1 µg/m³
✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
9.1
Median
9.1
Average
9.1
Low
9.1
High
PM2.5 µg/m³ · Model: 7.35 · Bias: -1.8
What is the 7-day forecast for Trieste?
05-29
19.9° 13.4°
5.0 mm
05-30
18.1° 14.3°
46.56 mm
05-31
24.2° 14.0°
06-01
18.9° 16.5°
5.0 mm
06-02
21.8° 15.3°
22.56 mm
06-03
18.7° 13.3°
4.0 mm
06-04
26.2° 18.2°
14.25 mm
Both models agree
Avg diff: 4.4°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 2026-05-29T00:10 UTC.