Air Quality
Excellent
No health implications.
18
PM2.5
29
PM10
70
O3
0.4
CO
5
SO2
5
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
7 Oct
57
Good
Wed
8 Oct
64
Good
Thu
9 Oct
55
Good
Fri
10 Oct
60
Good
Sat
11 Oct
59
Good
Sun
12 Oct
42
Excellent
Mon
13 Oct
30
Excellent
Air quality in the last 12 months (Weiyuan)
|
2025/08
|
44
|
32
|
30
|
21
|
25
|
32
|
29
|
24
|
26
|
33
|
41
|
34
|
39
|
37
|
38
|
37
|
35
|
31
|
26
|
57
|
23
|
30
|
26
|
35
|
29
|
24
|
24
|
22
|
27
|
37
|
38
|
|
2025/07
|
36
|
29
|
27
|
21
|
28
|
26
|
27
|
25
|
34
|
34
|
29
|
28
|
30
|
31
|
42
|
48
|
41
|
31
|
74
|
27
|
27
|
27
|
24
|
28
|
24
|
28
|
30
|
30
|
31
|
24
|
34
|
|
2025/06
|
36
|
43
|
36
|
34
|
42
|
46
|
47
|
52
|
32
|
43
|
42
|
40
|
41
|
41
|
61
|
44
|
50
|
47
|
39
|
45
|
38
|
22
|
29
|
26
|
26
|
34
|
27
|
34
|
38
|
26
|
|
|
2025/05
|
58
|
103
|
120
|
122
|
75
|
117
|
84
|
60
|
61
|
49
|
44
|
59
|
74
|
49
|
41
|
53
|
109
|
53
|
61
|
53
|
58
|
80
|
55
|
43
|
30
|
51
|
34
|
30
|
31
|
94
|
66
|
|
2025/04
|
103
|
100
|
81
|
108
|
87
|
66
|
55
|
89
|
114
|
73
|
106
|
371
|
110
|
70
|
61
|
133
|
76
|
240
|
141
|
101
|
107
|
86
|
59
|
53
|
55
|
40
|
56
|
53
|
56
|
87
|
|
|
2025/03
|
61
|
52
|
52
|
58
|
49
|
51
|
67
|
66
|
58
|
52
|
181
|
101
|
87
|
48
|
50
|
54
|
49
|
45
|
55
|
58
|
55
|
55
|
64
|
46
|
65
|
374
|
116
|
84
|
78
|
88
|
79
|
|
2025/02
|
57
|
60
|
52
|
51
|
50
|
49
|
57
|
65
|
65
|
58
|
81
|
83
|
72
|
70
|
62
|
63
|
64
|
54
|
65
|
56
|
48
|
56
|
50
|
50
|
54
|
53
|
51
|
54
|
|||
|
2025/01
|
70
|
72
|
76
|
70
|
76
|
72
|
62
|
69
|
71
|
61
|
66
|
70
|
69
|
70
|
69
|
65
|
66
|
69
|
74
|
73
|
77
|
79
|
74
|
72
|
66
|
73
|
78
|
88
|
119
|
76
|
59
|
|
2024/12
|
65
|
69
|
62
|
53
|
60
|
62
|
53
|
50
|
47
|
55
|
56
|
49
|
50
|
62
|
69
|
64
|
70
|
60
|
66
|
71
|
68
|
76
|
82
|
79
|
85
|
75
|
62
|
72
|
66
|
64
|
64
|
|
2024/11
|
49
|
45
|
54
|
56
|
54
|
46
|
41
|
39
|
52
|
54
|
52
|
53
|
58
|
50
|
56
|
41
|
44
|
34
|
43
|
52
|
55
|
49
|
44
|
41
|
42
|
54
|
58
|
64
|
62
|
65
|
|
|
2024/10
|
31
|
38
|
33
|
33
|
38
|
49
|
43
|
39
|
42
|
43
|
38
|
30
|
36
|
32
|
35
|
36
|
33
|
46
|
39
|
34
|
43
|
44
|
52
|
41
|
46
|
43
|
48
|
51
|
44
|
38
|
38
|
|
2024/09
|
49
|
38
|
34
|
25
|
21
|
25
|
26
|
34
|
27
|
27
|
26
|
29
|
23
|
30
|
28
|
26
|
30
|
31
|
29
|
36
|
29
|
37
|
39
|
37
|
31
|
30
|
39
|
46
|
30
|
29
|
|
|
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