Air Quality in Koesan, South Korea

Drizzle
16.4°C · 86.0% humidity
16.4°
Feels 16.4°
70
Moderate
Unusually sensitive people should consider reducing prolonged outdoor exertion.
11 stations

Nearby Monitoring Stations

AQI Forecast
34 3pm
54
54
70 6pm
45
62
60 9pm
70
69
85 12am
85
84
84 3am
84
83
83 6am
83
83
83 9am
83
66
54 12pm
54
54
AD 728×90

Air Quality Index Trend

48h · 31 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 1.4× the WHO 24-hour guideline of 15 µg/m³.

86.0%
Humidity
51.0 km/h
Wind SW
1007.2 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
70
21.16 µg/m³
PM10
25
27.45 µg/m³
050100150200300500

What is the weather forecast for Koesan?

Temperature & Precipitation

PM2.5 Trend

48h · 31 stations
PM2.521.16 µg/m³ ×1.4 WHO
Moderate
PM1027.45 µg/m³
Good
UV INDEX1.4
Low
AD 300×250
Station readings (11 stations within 25 km)
21.16
Median
24.72
Average
21.1
Low
28.7
High
PM2.5 µg/m³ · Model: 13.5 · Bias: -7.7

What is the 7-day forecast for Koesan?

05-30
20.5° 16.4°
0.38 mm
05-31
27.2° 15.9°
0.19 mm
06-01
29.4° 15.0°
0.06 mm
06-02
27.8° 17.3°
06-03
20.4° 12.9°
1.63 mm
06-04
24.4° 13.2°
7.44 mm
06-05
30.0° 14.9°
0.38 mm
Both models agree Avg diff: 3.5°C

Where are air quality stations near Koesan?

76
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
0.6 km PM2.5: 24.0 µg/m³
50
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
0.6 km PM2.5: 12.0 µg/m³
28
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
0.6 km PM2.5: 6.7 µg/m³
13
Goesan-eup, Chungbuk, South Korea (괴산읍 충북)
0.6 km PM2.5: 3.1 µg/m³
59
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
8.9 km PM2.5: 15.9 µg/m³
46
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
8.9 km PM2.5: 11.0 µg/m³
82
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
8.9 km PM2.5: 26.8 µg/m³
70
Cheongcheon-myeon, Chungbuk, South Korea (청천면 충북)
8.9 km PM2.5: 21.1 µg/m³
38
Soi-myeon, Chungbuk, South Korea (소이면 충북)
13.0 km PM2.5: 9.1 µg/m³
46
Soi-myeon, Chungbuk, South Korea (소이면 충북)
13.0 km PM2.5: 11.0 µg/m³

What cities are near Koesan?

75 Jungpyong 79 Chungju 80 Chinch'ŏn 68 Cheongju-si 62 Mungyeong 68 Sejong 89 Anseong 54 Sangju 104 Yeoju 64 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 2026-05-30T09:12 UTC.