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
AD 728×90

Air Quality Index Trend

47h · 29 stn

Koesan'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▲
75
23.52 µg/m³
PM10
19
20.55 µg/m³
050100150200300500

What is the weather forecast for Koesan?

Temperature & Precipitation

PM2.5 Trend

47h · 29 stations
PM2.523.52 µg/m³ ×1.6 WHO
Moderate
PM1020.55 µg/m³
Good
UV INDEX0.7
Low
AD 300×250
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)
0.6 km PM2.5: 22.1 µg/m³
50
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
0.6 km PM2.5: 12.0 µg/m³
9
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
0.6 km PM2.5: 2.2 µg/m³
63
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
0.6 km PM2.5: 17.8 µg/m³
59
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
0.6 km PM2.5: 15.9 µg/m³
46
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
8.9 km PM2.5: 11.0 µg/m³
4
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
8.9 km PM2.5: 1.0 µg/m³
21
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
8.9 km PM2.5: 5.0 µg/m³
38
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
8.9 km PM2.5: 9.1 µg/m³
34
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
8.9 km PM2.5: 8.2 µg/m³

What cities are near Koesan?

78 Jungpyong 76 Chungju 69 Chinch'ŏn 58 Cheongju-si 58 Mungyeong 67 Sejong 53 Anseong 58 Sangju 80 Yeoju 62 Cheonan
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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.