Air Quality in Viljandi, Estonia
Cloudy
10.8°C · 80.6% humidity
10.8°
Feels 10.8°
4
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Viljandi's air quality — share it
AQI Forecast
Calibrated
3
8am
3
3
4
11am
3
3
3
2pm
2
3
3
5pm
2
2
2
8pm
2
2
2
11pm
2
2
2
2am
2
2
2
5am
2
2
Station readings
5
4
5
CAMS model
adj -22
25
25
25
25
25
25
25
24
25
25
24
24
24
24
24
24
24
24
24
24
24
24
24
24
Air Quality Index Trend
47h · 1 stnViljandi'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.
80.6%
Humidity
10.2 km/h
Wind W
1014.4 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
1.03 µg/m³
PM10▲
13.7 µg/m³
050100150200300500
What is the weather forecast for Viljandi?
Temperature & Precipitation
PM2.5 Trend
47h · 1 stationPM2.51.03 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX1.4
Low
Station readings (1 station within 25 km)
1.03
Median
1.03
Average
1.03
Low
1.03
High
PM2.5 µg/m³ · Model: 5.9 · Bias: +4.9
What is the 7-day forecast for Viljandi?
09-05
11.7° 5.4°
5.69 mm
09-06
16.8° 10.7°
0.56 mm
09-07
13.2° 9.6°
1.81 mm
09-08
16.9° 6.9°
0.56 mm
09-09
11.2° 10.3°
7.88 mm
09-10
16.0° 12.3°
5.44 mm
09-11
18.3° 7.7°
0.69 mm
Both models agree
Avg diff: 3.5°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 2026-09-05T08:45 UTC.