Air Quality
Excellent
No health implications.
3
PM2.5
9
PM10
61
O3
0.5
CO
7
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
19 Sep
63
Good
Sat
20 Sep
58
Good
Sun
21 Sep
54
Good
Mon
22 Sep
56
Good
Tue
23 Sep
67
Good
Wed
24 Sep
67
Good
Thu
25 Sep
18
Excellent
Air quality in the last 12 months (Wonju)
|
2025/08
|
35
|
30
|
30
|
23
|
28
|
34
|
31
|
20
|
18
|
23
|
37
|
25
|
30
|
26
|
30
|
19
|
21
|
18
|
19
|
114
|
24
|
33
|
15
|
17
|
19
|
16
|
41
|
30
|
14
|
17
|
25
|
|
2025/07
|
19
|
17
|
22
|
22
|
17
|
22
|
18
|
30
|
23
|
27
|
19
|
27
|
30
|
29
|
43
|
47
|
37
|
30
|
83
|
23
|
24
|
16
|
21
|
20
|
23
|
15
|
18
|
19
|
30
|
26
|
41
|
|
2025/06
|
40
|
40
|
37
|
26
|
30
|
33
|
38
|
42
|
46
|
42
|
40
|
42
|
45
|
72
|
64
|
48
|
39
|
37
|
40
|
27
|
25
|
30
|
25
|
28
|
18
|
18
|
22
|
22
|
28
|
15
|
|
|
2025/05
|
116
|
146
|
106
|
140
|
228
|
135
|
89
|
137
|
133
|
50
|
28
|
53
|
93
|
60
|
52
|
90
|
148
|
65
|
49
|
53
|
81
|
87
|
32
|
33
|
17
|
29
|
27
|
26
|
30
|
55
|
34
|
|
2025/04
|
91
|
83
|
94
|
126
|
84
|
90
|
59
|
122
|
124
|
64
|
201
|
321
|
126
|
47
|
64
|
232
|
81
|
217
|
136
|
98
|
177
|
98
|
48
|
53
|
55
|
37
|
50
|
43
|
68
|
238
|
|
|
2025/03
|
70
|
35
|
34
|
36
|
50
|
42
|
69
|
60
|
70
|
47
|
174
|
96
|
77
|
49
|
43
|
47
|
42
|
30
|
48
|
67
|
60
|
68
|
85
|
68
|
68
|
310
|
111
|
122
|
59
|
68
|
72
|
|
2025/02
|
50
|
46
|
40
|
41
|
39
|
58
|
83
|
59
|
58
|
50
|
91
|
87
|
67
|
56
|
58
|
110
|
73
|
68
|
48
|
56
|
63
|
45
|
23
|
41
|
57
|
44
|
49
|
45
|
|||
|
2025/01
|
97
|
52
|
71
|
62
|
47
|
42
|
53
|
50
|
47
|
52
|
85
|
70
|
126
|
52
|
50
|
50
|
64
|
62
|
51
|
50
|
67
|
74
|
144
|
163
|
76
|
105
|
77
|
109
|
183
|
78
|
45
|
|
2024/12
|
39
|
54
|
47
|
43
|
43
|
47
|
32
|
36
|
53
|
78
|
66
|
55
|
48
|
54
|
68
|
60
|
67
|
41
|
59
|
55
|
41
|
50
|
58
|
71
|
64
|
75
|
48
|
50
|
55
|
39
|
49
|
|
2024/11
|
26
|
35
|
44
|
44
|
45
|
42
|
43
|
62
|
64
|
48
|
46
|
51
|
59
|
46
|
78
|
42
|
31
|
15
|
35
|
46
|
41
|
40
|
50
|
42
|
37
|
52
|
70
|
50
|
27
|
36
|
|
|
2024/10
|
40
|
26
|
33
|
22
|
32
|
43
|
34
|
42
|
50
|
48
|
34
|
38
|
38
|
39
|
32
|
49
|
25
|
47
|
13
|
27
|
27
|
28
|
33
|
34
|
47
|
48
|
28
|
33
|
39
|
22
|
30
|
|
2024/09
|
53
|
38
|
28
|
42
|
15
|
14
|
17
|
33
|
27
|
14
|
17
|
26
|
17
|
21
|
23
|
15
|
31
|
33
|
51
|
48
|
33
|
29
|
38
|
41
|
21
|
19
|
78
|
81
|
20
|
23
|
|
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
10
|
11
|
12
|
13
|
14
|
15
|
16
|
17
|
18
|
19
|
20
|
21
|
22
|
23
|
24
|
25
|
26
|
27
|
28
|
29
|
30
|
31
|
- Excellent
- Good
- Lightly
- Moderately
- Heavily
- Severely
Air quality source: CNEMC
*: primary pollution