Air Quality
Excellent
No health implications.
13
PM2.5
27
PM10
102
O3
0.5
CO
4
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Jul
121
Light
Sat
19 Jul
73
Good
Sun
20 Jul
59
Good
Mon
21 Jul
80
Good
Tue
22 Jul
69
Good
Wed
23 Jul
67
Good
Thu
24 Jul
44
Excellent
Air quality in the last 12 months (Weiyuan)
|
2025/06
|
33
|
17
|
30
|
33
|
35
|
51
|
40
|
34
|
23
|
30
|
35
|
36
|
36
|
37
|
33
|
27
|
31
|
11
|
13
|
26
|
21
|
21
|
22
|
20
|
14
|
20
|
24
|
26
|
24
|
12
|
|
|
2025/05
|
45
|
65
|
72
|
88
|
41
|
56
|
34
|
48
|
102
|
79
|
62
|
111
|
93
|
110
|
77
|
62
|
73
|
82
|
60
|
62
|
48
|
47
|
58
|
54
|
51
|
42
|
39
|
21
|
22
|
36
|
30
|
|
2025/04
|
43
|
61
|
59
|
56
|
49
|
50
|
55
|
55
|
58
|
67
|
51
|
257
|
169
|
129
|
121
|
87
|
74
|
68
|
63
|
46
|
50
|
58
|
64
|
40
|
45
|
33
|
42
|
53
|
37
|
28
|
|
|
2025/03
|
89
|
83
|
37
|
37
|
36
|
19
|
38
|
43
|
55
|
75
|
71
|
72
|
53
|
55
|
36
|
36
|
25
|
39
|
39
|
47
|
56
|
69
|
72
|
61
|
57
|
63
|
117
|
85
|
35
|
22
|
30
|
|
2025/02
|
43
|
46
|
45
|
50
|
46
|
33
|
30
|
32
|
46
|
56
|
67
|
57
|
54
|
51
|
60
|
69
|
81
|
89
|
66
|
58
|
62
|
52
|
49
|
35
|
45
|
54
|
68
|
87
|
|||
|
2025/01
|
106
|
144
|
149
|
145
|
126
|
103
|
87
|
50
|
55
|
57
|
48
|
55
|
99
|
91
|
80
|
85
|
88
|
78
|
87
|
106
|
126
|
181
|
208
|
127
|
35
|
62
|
65
|
81
|
177
|
115
|
85
|
|
2024/12
|
94
|
137
|
136
|
115
|
53
|
38
|
38
|
19
|
46
|
55
|
60
|
69
|
51
|
48
|
53
|
73
|
94
|
137
|
118
|
111
|
120
|
107
|
80
|
80
|
79
|
82
|
107
|
87
|
85
|
74
|
83
|
|
2024/11
|
44
|
49
|
63
|
59
|
50
|
65
|
61
|
66
|
79
|
59
|
44
|
57
|
44
|
55
|
65
|
44
|
21
|
19
|
20
|
26
|
44
|
48
|
68
|
51
|
21
|
24
|
37
|
58
|
72
|
76
|
|
|
2024/10
|
21
|
26
|
21
|
35
|
47
|
47
|
49
|
58
|
73
|
67
|
44
|
40
|
36
|
44
|
59
|
126
|
23
|
31
|
33
|
18
|
17
|
26
|
44
|
61
|
62
|
45
|
28
|
57
|
70
|
67
|
75
|
|
2024/09
|
28
|
38
|
42
|
37
|
30
|
29
|
35
|
31
|
32
|
29
|
23
|
33
|
53
|
45
|
41
|
38
|
37
|
51
|
54
|
55
|
25
|
35
|
60
|
69
|
75
|
72
|
79
|
87
|
65
|
11
|
|
|
2024/08
|
39
|
34
|
27
|
21
|
22
|
33
|
36
|
38
|
44
|
27
|
40
|
54
|
51
|
55
|
56
|
33
|
42
|
39
|
48
|
53
|
54
|
66
|
62
|
59
|
47
|
51
|
50
|
56
|
46
|
53
|
58
|
|
2024/07
|
21
|
21
|
29
|
31
|
26
|
28
|
40
|
27
|
15
|
12
|
18
|
22
|
30
|
11
|
20
|
28
|
29
|
17
|
22
|
21
|
30
|
20
|
34
|
29
|
30
|
45
|
40
|
26
|
21
|
22
|
37
|
|
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