Air Quality
Excellent
No health implications.
17
PM2.5
28
PM10
52
O3
0.5
CO
11
SO2
6
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
25 May
67
Good
Tue
26 May
64
Good
Wed
27 May
60
Good
Thu
28 May
67
Good
Fri
29 May
78
Good
Sat
30 May
16
Excellent
Sun
31 May
16
Excellent
Air quality in the last 12 months (Weiyuan)
|
2026/04
|
25
|
29
|
33
|
52
|
55
|
42
|
19
|
20
|
39
|
40
|
28
|
33
|
34
|
27
|
35
|
42
|
35
|
54
|
60
|
107
|
36
|
37
|
47
|
65
|
100
|
122
|
59
|
25
|
26
|
40
|
|
|
2026/03
|
23
|
28
|
35
|
32
|
43
|
69
|
60
|
28
|
20
|
28
|
40
|
58
|
55
|
27
|
34
|
28
|
23
|
27
|
46
|
46
|
50
|
49
|
42
|
46
|
43
|
45
|
61
|
45
|
48
|
29
|
23
|
|
2026/02
|
77
|
79
|
104
|
108
|
88
|
100
|
74
|
41
|
43
|
51
|
55
|
65
|
81
|
85
|
85
|
54
|
115
|
89
|
88
|
82
|
78
|
90
|
87
|
59
|
58
|
39
|
50
|
34
|
|||
|
2026/01
|
25
|
23
|
18
|
35
|
51
|
51
|
60
|
74
|
84
|
122
|
146
|
135
|
117
|
110
|
108
|
151
|
153
|
153
|
70
|
26
|
36
|
31
|
44
|
66
|
65
|
65
|
76
|
91
|
74
|
36
|
45
|
|
2025/12
|
123
|
137
|
81
|
42
|
57
|
66
|
76
|
98
|
112
|
105
|
102
|
103
|
46
|
62
|
73
|
92
|
110
|
99
|
120
|
84
|
47
|
42
|
58
|
58
|
61
|
63
|
73
|
89
|
85
|
106
|
83
|
|
2025/11
|
17
|
22
|
24
|
26
|
40
|
38
|
34
|
33
|
43
|
22
|
28
|
28
|
25
|
34
|
38
|
35
|
25
|
25
|
35
|
54
|
73
|
83
|
93
|
74
|
76
|
80
|
84
|
87
|
108
|
124
|
|
|
2025/10
|
16
|
15
|
19
|
24
|
16
|
16
|
19
|
26
|
40
|
49
|
34
|
15
|
14
|
22
|
34
|
34
|
23
|
30
|
25
|
10
|
9
|
19
|
23
|
21
|
25
|
30
|
25
|
41
|
37
|
27
|
34
|
|
2025/09
|
21
|
32
|
29
|
26
|
24
|
27
|
43
|
30
|
33
|
35
|
20
|
9
|
11
|
20
|
36
|
40
|
17
|
11
|
9
|
16
|
12
|
10
|
11
|
16
|
28
|
27
|
22
|
17
|
10
|
23
|
|
|
2025/08
|
25
|
26
|
28
|
37
|
42
|
32
|
21
|
25
|
23
|
13
|
13
|
16
|
25
|
39
|
28
|
28
|
24
|
18
|
20
|
31
|
25
|
13
|
13
|
14
|
13
|
21
|
28
|
32
|
14
|
12
|
12
|
|
2025/07
|
18
|
22
|
30
|
28
|
15
|
18
|
24
|
17
|
20
|
17
|
16
|
20
|
24
|
27
|
30
|
33
|
33
|
32
|
22
|
17
|
15
|
19
|
17
|
14
|
18
|
17
|
17
|
26
|
31
|
28
|
25
|
|
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
|
|
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