Air Quality in Koper, Slovenia

Drizzle
13.9°C · 76.9% humidity
13.9°
Feels 13.9°
38
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station

Nearby Monitoring Stations

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
AD 728×90

Air Quality Index Trend

48h · 2 stn

Koper'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 Koper is 1.8× the WHO annual guideline of 5 µg/m³.

76.9%
Humidity
32.1 km/h
Wind ENE
1011.8 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
PM2.5
38
9.1 µg/m³
PM10
25
27.4 µg/m³
050100150200300500

Temperature & Precipitation

PM2.5 Trend

48h · 2 stations
PM2.59.1 µg/m³ ✓ WHO
Good
PM1027.4 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
9.1
Median
9.1
Average
9.1
Low
9.1
High
PM2.5 µg/m³ · Model: 7.35 · Bias: -1.8
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
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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 2026-05-29T00:11 UTC.