Air Quality
Light
Healthy people may experience slight irritations and sensitive individuals will be slightly affected to a larger extent.
109
*
PM2.5
173
PM10
47
O3
1.3
CO
18
SO2
66
NO2
Healthy people may experience slight irritations and sensitive individuals will be slightly affected to a larger extent.
Advise
Children, seniors and individuals with respiratory or heart diseases should reduce sustained and high-intensity outdoor exercises.
Air Quality
Today
4 Feb
161
Moderate
Thu
5 Feb
144
Light
Fri
6 Feb
54
Good
Sat
7 Feb
58
Good
Sun
8 Feb
71
Good
Mon
9 Feb
84
Good
Tue
10 Feb
24
Excellent
Yiyuan Air quality rank
Air quality in the last 12 months (Yiyuan)
|
2025/12
|
77
|
41
|
55
|
69
|
70
|
124
|
136
|
63
|
92
|
92
|
82
|
30
|
60
|
82
|
81
|
128
|
91
|
88
|
159
|
84
|
52
|
44
|
61
|
95
|
33
|
51
|
75
|
115
|
136
|
123
|
37
|
|
2025/11
|
108
|
53
|
46
|
63
|
61
|
50
|
81
|
101
|
73
|
59
|
73
|
86
|
94
|
104
|
170
|
121
|
32
|
50
|
61
|
78
|
91
|
119
|
128
|
154
|
38
|
85
|
81
|
108
|
123
|
145
|
|
|
2025/10
|
46
|
18
|
21
|
38
|
12
|
12
|
33
|
37
|
25
|
15
|
17
|
16
|
27
|
41
|
33
|
48
|
46
|
22
|
33
|
31
|
40
|
47
|
42
|
48
|
92
|
95
|
73
|
86
|
59
|
52
|
93
|
|
2025/09
|
24
|
27
|
31
|
35
|
28
|
28
|
48
|
64
|
42
|
47
|
31
|
19
|
32
|
53
|
44
|
30
|
18
|
24
|
12
|
32
|
37
|
31
|
31
|
24
|
41
|
48
|
28
|
30
|
57
|
54
|
|
|
2025/08
|
12
|
14
|
32
|
38
|
39
|
32
|
37
|
33
|
14
|
22
|
27
|
27
|
38
|
34
|
23
|
32
|
23
|
37
|
37
|
30
|
31
|
30
|
30
|
37
|
46
|
28
|
26
|
32
|
32
|
32
|
19
|
|
2025/07
|
29
|
27
|
25
|
24
|
27
|
37
|
31
|
25
|
25
|
34
|
36
|
31
|
40
|
19
|
33
|
31
|
32
|
37
|
37
|
26
|
14
|
11
|
19
|
22
|
26
|
22
|
20
|
18
|
19
|
27
|
24
|
|
2025/06
|
44
|
44
|
44
|
36
|
52
|
51
|
63
|
58
|
55
|
31
|
41
|
40
|
37
|
38
|
32
|
24
|
29
|
38
|
18
|
26
|
30
|
33
|
38
|
37
|
52
|
57
|
38
|
34
|
22
|
22
|
|
|
2025/05
|
50
|
59
|
39
|
43
|
48
|
52
|
60
|
53
|
18
|
27
|
47
|
51
|
52
|
59
|
42
|
67
|
70
|
51
|
79
|
67
|
63
|
63
|
44
|
51
|
45
|
50
|
49
|
46
|
45
|
48
|
58
|
|
2025/04
|
66
|
36
|
47
|
72
|
51
|
61
|
85
|
90
|
65
|
72
|
65
|
135
|
48
|
56
|
54
|
69
|
111
|
74
|
48
|
55
|
51
|
82
|
68
|
66
|
67
|
58
|
61
|
54
|
56
|
68
|
|
|
2025/03
|
73
|
21
|
45
|
65
|
95
|
97
|
73
|
101
|
111
|
108
|
107
|
146
|
61
|
59
|
65
|
40
|
52
|
33
|
51
|
64
|
57
|
66
|
92
|
102
|
121
|
88
|
97
|
72
|
41
|
56
|
68
|
|
2025/02
|
76
|
118
|
56
|
38
|
39
|
58
|
44
|
27
|
51
|
77
|
70
|
103
|
79
|
83
|
100
|
90
|
52
|
60
|
55
|
64
|
81
|
47
|
55
|
49
|
71
|
91
|
122
|
138
|
|||
|
2025/01
|
133
|
103
|
78
|
136
|
184
|
59
|
55
|
46
|
45
|
51
|
87
|
107
|
105
|
103
|
42
|
66
|
83
|
111
|
128
|
95
|
134
|
142
|
113
|
124
|
85
|
74
|
32
|
62
|
141
|
94
|
122
|
|
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