Air Quality in Koesan, South Korea
Cloudy
20.2°C · 77.1% humidity
20.2°
Feels 20.2°
75
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
10 stations
Nearby Monitoring Stations
AQI Forecast
27
4pm
27
25
75
7pm
61
53
52
10pm
67
63
61
1am
59
57
56
4am
68
67
55
7am
55
54
27
10am
27
34
54
1pm
54
54
Air Quality Index Trend
47h · 29 stnKoesan's air quality is influenced by industrial emissions, vehicle traffic, and regional pollution transport. Winter heating season and spring dust events typically create the most challenging air quality conditions. Current PM2.5 concentration in Koesan is 1.6× the WHO 24-hour guideline of 15 µg/m³.
77.1%
Humidity
16.1 km/h
Wind WSW
1007.5 hPa
Pressure
0.7
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous
Which pollutant is driving the AQI?
PM2.5▲
23.52 µg/m³
PM10
20.55 µg/m³
050100150200300500
What is the weather forecast for Koesan?
Temperature & Precipitation
PM2.5 Trend
47h · 29 stationsPM2.523.52 µg/m³
×1.6 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
Station readings (10 stations within 25 km)
23.52
Median
24.59
Average
17.3
Low
29.7
High
PM2.5 µg/m³ · Model: 9.75 · Bias: -13.8
What is the 7-day forecast for Koesan?
06-09
27.3° 18.7°
0.75 mm
06-10
16.4° 12.1°
0.69 mm
06-11
29.2° 15.5°
0.31 mm
06-12
27.6° 17.0°
06-13
28.9° 15.8°
06-14
25.0° 15.9°
3.31 mm
06-15
28.8° 16.1°
Both models agree
Avg diff: 2.8°C
Where are air quality stations near Koesan?
72
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
50
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
9
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
63
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
59
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
46
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
4
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
21
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
38
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
34
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
What cities are near Koesan?
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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 2026-06-09T10:47 UTC.