Air Quality in Trieste, Italy
Rain
19.2°C · 90.4% humidity
19.2°
Feels 19.2°
39
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Trieste's air quality — share it
AQI Forecast
Calibrated
43
8pm
43
43
39
11pm
42
44
46
2am
40
41
42
5am
42
42
40
8am
41
41
41
11am
41
41
41
2pm
40
40
40
5pm
40
41
Station readings
40
39
CAMS model
adj +16
27
27
27
34
34
34
34
27
27
27
27
27
25
25
25
25
25
25
25
24
24
24
24
25
Air Quality Index Trend
7h · 1 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.
90.4%
Humidity
32.5 km/h
Wind ENE
1013.6 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.4 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Trieste?
Temperature & Precipitation
PM2.5 Trend
7h · 1 stationPM2.59.4 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
9.4
Median
9.4
Average
9.4
Low
9.4
High
PM2.5 µg/m³ · Model: 7.1 · Bias: -2.3
What is the 7-day forecast for Trieste?
07-21
28.7° 19.9°
0.63 mm
07-22
25.2° 19.2°
4.81 mm
07-23
26.2° 23.1°
07-24
25.3° 19.2°
0.19 mm
07-25
27.2° 17.7°
4.13 mm
07-26
28.0° 20.5°
0.69 mm
07-27
31.7° 23.9°
Both models agree
Avg diff: 3.2°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 2026-07-21T21:33 UTC.