Air Quality in Koper, Slovenia
Heavy Rain
13.2°C · 92.5% humidity
13.2°
Feels 13.2°
47
Good
Air quality is satisfactory. Enjoy outdoor activities.
3 stations
Nearby Monitoring Stations
Koper's air quality — share it
AQI Forecast
27
8pm
27
34
47
11pm
43
41
39
2am
30
29
29
5am
28
28
28
8am
27
27
27
11am
34
34
27
2pm
25
25
25
5pm
25
27
Air Quality Index Trend
48h · 1 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.
92.5%
Humidity
29.3 km/h
Wind SE
1013.7 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
11.17 µg/m³
PM10
27.4 µg/m³
050100150200300500
What is the weather forecast for Koper?
Temperature & Precipitation
PM2.5 Trend
48h · 1 stationPM2.511.17 µg/m³
✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
Station readings (3 stations within 25 km)
11.17
Median
11.17
Average
9.6
Low
12.6
High
PM2.5 µg/m³ · Model: 8.2 · Bias: -3.0
What is the 7-day forecast for Koper?
05-29
20.4° 12.2°
9.75 mm
05-30
19.1° 13.2°
75.56 mm
05-31
25.5° 13.0°
06-01
21.8° 15.0°
6.81 mm
06-02
22.9° 15.1°
24.62 mm
06-03
22.3° 12.7°
5.81 mm
06-04
27.5° 18.0°
12.63 mm
Both models agree
Avg diff: 4.8°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 2026-05-29T21:24 UTC.