Air Quality in Osan, South Korea

Windy
16.6°C · 74.1% humidity
16.6°
Feels 16.6°
105
Unhealthy for sensitive groups
Sensitive groups should reduce prolonged outdoor exertion.
18 stations

Nearby Monitoring Stations

AQI Forecast
54 3pm
54
34
105 6pm
105
90
80 9pm
85
96
93 12am
90
88
87 3am
86
85
84 6am
85
84
83 9am
66
66
54 12pm
54
54
AD 728×90

Air Quality Index Trend

48h · 113 stn

Osan'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 Osan is 2.5× the WHO 24-hour guideline of 15 µg/m³.

74.1%
Humidity
41.2 km/h
Wind WSW
1006.6 hPa
Pressure
1.4
UV Low
GoodModerateUSGUnhealthyVery UnhealthyHazardous

Which pollutant is driving the AQI?

PM2.5▲
105
37.14 µg/m³
PM10
53
59.3 µg/m³
050100150200300500

What is the weather forecast for Osan?

Temperature & Precipitation

PM2.5 Trend

48h · 113 stations
PM2.537.14 µg/m³ ×2.5 WHO
Unhealthy for sensitive groups
PM1059.3 µg/m³
Moderate
UV INDEX1.4
Low
AD 300×250
Station readings (18 stations within 25 km)
37.14
Median
37.07
Average
26.8
Low
46.5
High
PM2.5 µg/m³ · Model: 17.65 · Bias: -19.5

What is the 7-day forecast for Osan?

05-30
26.4° 16.6°
1.25 mm
05-31
25.2° 19.6°
1.87 mm
06-01
28.1° 18.2°
06-02
30.1° 20.2°
06-03
26.3° 15.6°
2.06 mm
06-04
23.1° 17.5°
1.69 mm
06-05
28.8° 17.3°
0.06 mm
Both models agree Avg diff: 3.0°C

Where are air quality stations near Osan?

89
Osan-dong, Osan-si, Gyeonggi, South Korea (오산동 경기)
1.0 km PM2.5: 30.2 µg/m³
65
Osan-dong, Osan-si, Gyeonggi, South Korea (오산동 경기)
1.0 km PM2.5: 18.8 µg/m³
92
Sinjangdong(Osan), Gyeonggi, South Korea (금암로(신장동) 경기)
2.7 km PM2.5: 31.6 µg/m³
22
Sinjangdong(Osan), Gyeonggi, South Korea (금암로(신장동) 경기)
2.7 km PM2.5: 5.3 µg/m³
76
Sinjangdong(Osan), Gyeonggi, South Korea (금암로(신장동) 경기)
2.7 km PM2.5: 24.0 µg/m³
110
Sinjangdong(Osan), Gyeonggi, South Korea (금암로(신장동) 경기)
2.7 km PM2.5: 39.2 µg/m³
55
Dongtan-dong, Hwaseong-si, Gyeonggi, South Korea (동탄 경기)
5.0 km PM2.5: 14.0 µg/m³
18
Dongtan-dong, Hwaseong-si, Gyeonggi, South Korea (동탄 경기)
5.0 km PM2.5: 4.3 µg/m³
70
Dongtan-dong, Hwaseong-si, Gyeonggi, South Korea (동탄 경기)
5.0 km PM2.5: 21.1 µg/m³
43
Dongtan-dong, Hwaseong-si, Gyeonggi, South Korea (동탄 경기)
5.0 km PM2.5: 10.3 µg/m³

What cities are near Osan?

114 Suwon 85 Pyeongtaek 94 Hwaseong-si 89 Anseong 98 Uiwang 97 Gunpo 71 Seonghwan 76 Ansan-si 92 Anyang-si 92 Seongnam-si
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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 2026-05-30T09:10 UTC.