Air Quality in Viljandi, Estonia
Cloudy
10.7°C · 88.0% humidity
10.7°
Feels 10.7°
11
Good
Air quality is satisfactory. Enjoy outdoor activities.
1 station
Nearby Monitoring Stations
Viljandi's air quality — share it
AQI Forecast
Calibrated
11
10pm
11
11
11
1am
11
11
11
4am
11
11
11
7am
11
11
11
10am
11
11
11
1pm
11
11
11
4pm
11
11
11
7pm
11
12
Station readings
13
12
8
CAMS model
adj -13
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
24
25
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.
88.0%
Humidity
28.4 km/h
Wind S
1006.4 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5
2.62 µg/m³
PM10▲
13.7 µg/m³
050100150200300500
What is the weather forecast for Viljandi?
Temperature & Precipitation
PM2.5 Trend
47h · 1 stationPM2.52.62 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (1 station within 25 km)
2.62
Median
2.62
Average
2.62
Low
2.62
High
PM2.5 µg/m³ · Model: 5.8 · Bias: +3.2
What is the 7-day forecast for Viljandi?
07-21
18.1° 14.6°
0.31 mm
07-22
21.4° 10.7°
0.13 mm
07-23
25.2° 12.5°
1.0 mm
07-24
19.8° 11.8°
3.06 mm
07-25
22.2° 9.8°
0.56 mm
07-26
17.2° 16.9°
5.12 mm
07-27
20.3° 13.7°
4.13 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 2026-07-21T22:37 UTC.