Air Quality in Troyan, Bulgaria
Drizzle
18.6°C · 74.2% humidity
18.6°
Feels 18.6°
40
Good
Air quality is satisfactory. Enjoy outdoor activities.
2 stations
Nearby Monitoring Stations
Troyan's air quality — share it
AQI Forecast
Calibrated
53
11pm
42
38
40
2am
43
43
43
5am
43
43
43
8am
43
43
43
11am
43
43
43
2pm
43
43
43
5pm
42
42
42
8pm
43
43
Station readings
53
42
38
CAMS model
adj +18
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
25
24
24
24
25
25
Air Quality Index Trend
47h · 2 stnTroyan'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.
74.2%
Humidity
28.0 km/h
Wind SW
1013.0 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
9.5 µg/m³
PM10
13.7 µg/m³
050100150200300500
What is the weather forecast for Troyan?
Temperature & Precipitation
PM2.5 Trend
47h · 2 stationsPM2.59.5 µg/m³
✓ WHO
Good
PM1013.7 µg/m³
Good
UV INDEX0.7
Low
Station readings (2 stations within 25 km)
9.5
Median
8.5
Average
7.5
Low
9.5
High
PM2.5 µg/m³ · Model: 5.9 · Bias: -3.6
What is the 7-day forecast for Troyan?
07-21
36.1° 17.0°
2.38 mm
07-22
30.3° 18.6°
0.25 mm
07-23
28.4° 19.3°
13.19 mm
07-24
28.4° 17.1°
07-25
24.7° 18.3°
0.94 mm
07-26
25.0° 17.1°
3.62 mm
07-27
35.3° 22.6°
Both models agree
Avg diff: 6.4°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 2026-07-21T23:42 UTC.