Air Quality in Koper, Slovenia
Partly Cloudy
17.7°C · 66.4% humidity
17.7°
Feels 17.7°
34
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Koper's air quality — share it
AQI Forecast
Calibrated
34
11pm
41
41
34
2am
29
30
31
5am
32
33
31
8am
31
32
32
11am
32
34
34
2pm
61
61
61
5pm
61
41
41
8pm
34
41
Station readings
26h ago
AQI 34
PM2.5 8.2 µg/m³ · 26h ago
Air Quality Index Trend
48h · 2 stnKoper'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.
66.4%
Humidity
24.6 km/h
Wind E
1013.1 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
8.2 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Koper?
Temperature & Precipitation
PM2.5 Trend
48h · 2 stationsPM2.58.2 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
8.2
Median
8.2
Average
8.2
Low
8.2
High
PM2.5 µg/m³ · Model: 7.35 · Bias: -0.9
What is the 7-day forecast for Koper?
06-09
23.1° 17.7°
2.56 mm
06-10
28.2° 20.6°
0.06 mm
06-11
25.1° 16.7°
06-12
28.9° 16.9°
0.31 mm
06-13
27.4° 15.6°
15.94 mm
06-14
28.8° 18.4°
1.44 mm
06-15
31.2° 15.0°
1.0 mm
Both models agree
Avg diff: 2.6°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 2026-06-09T00:40 UTC.