Air Quality in Trieste, Italy
Drizzle
14.7°C · 78.6% humidity
14.7°
Feels 14.7°
54
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
2 stations
Nearby Monitoring Stations
Trieste's air quality — share it
AQI Forecast
27
8pm
27
34
54
11pm
48
64
41
2am
39
38
30
5am
29
28
28
8am
28
28
25
11am
25
25
27
2pm
25
25
25
5pm
27
27
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 2.7× 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▲
13.35 µg/m³
PM10
27.4 µg/m³
050100150200300500
What is the weather forecast for Trieste?
Temperature & Precipitation
PM2.5 Trend
48h · 2 stationsPM2.513.35 µg/m³
✓ WHO
Moderate
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
13.35
Median
13.35
Average
10.3
Low
16.4
High
PM2.5 µg/m³ · Model: 8.2 · Bias: -5.2
What is the 7-day forecast for Trieste?
05-28
21.5° 15.7°
3.62 mm
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
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 2026-05-28T21:48 UTC.