Air Quality
Excellent
No health implications.
19
PM2.5
42
PM10
144
O3
0.4
CO
9
SO2
17
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
28 Apr
92
Good
Tue
29 Apr
99
Good
Wed
30 Apr
110
Light
Thu
1 May
87
Good
Fri
2 May
98
Good
Sat
3 May
86
Good
Sun
4 May
35
Excellent
Air quality in the last 12 months (Yiyuan)
|
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
|
|
2024/12
|
99
|
76
|
58
|
94
|
129
|
109
|
51
|
57
|
90
|
118
|
74
|
66
|
72
|
67
|
79
|
90
|
92
|
41
|
61
|
94
|
48
|
60
|
81
|
114
|
163
|
73
|
64
|
69
|
77
|
101
|
89
|
|
2024/11
|
108
|
70
|
85
|
48
|
51
|
55
|
56
|
53
|
57
|
72
|
100
|
140
|
115
|
53
|
77
|
79
|
51
|
37
|
45
|
71
|
100
|
64
|
44
|
58
|
35
|
27
|
39
|
47
|
59
|
71
|
|
|
2024/10
|
24
|
23
|
41
|
53
|
53
|
52
|
54
|
46
|
65
|
94
|
72
|
75
|
71
|
65
|
87
|
72
|
54
|
12
|
33
|
38
|
61
|
56
|
42
|
73
|
84
|
73
|
101
|
48
|
76
|
113
|
130
|
|
2024/09
|
41
|
20
|
32
|
46
|
34
|
21
|
39
|
47
|
38
|
38
|
21
|
38
|
46
|
31
|
26
|
35
|
38
|
28
|
23
|
24
|
18
|
31
|
34
|
49
|
60
|
70
|
46
|
47
|
42
|
31
|
|
|
2024/08
|
23
|
23
|
29
|
25
|
14
|
17
|
30
|
22
|
30
|
44
|
84
|
40
|
40
|
35
|
37
|
38
|
36
|
32
|
23
|
23
|
39
|
50
|
52
|
53
|
52
|
30
|
14
|
35
|
38
|
50
|
58
|
|
2024/07
|
44
|
32
|
33
|
26
|
28
|
14
|
22
|
32
|
51
|
62
|
67
|
74
|
60
|
43
|
32
|
17
|
32
|
52
|
25
|
14
|
29
|
27
|
34
|
40
|
27
|
15
|
13
|
10
|
23
|
23
|
23
|
|
2024/06
|
30
|
54
|
55
|
45
|
36
|
48
|
41
|
56
|
56
|
64
|
53
|
52
|
51
|
59
|
41
|
37
|
37
|
41
|
39
|
36
|
44
|
53
|
85
|
93
|
65
|
45
|
23
|
44
|
43
|
52
|
|
|
2024/05
|
49
|
52
|
56
|
40
|
42
|
62
|
67
|
55
|
54
|
58
|
190
|
79
|
70
|
84
|
47
|
53
|
66
|
69
|
57
|
47
|
55
|
49
|
54
|
67
|
51
|
48
|
44
|
38
|
41
|
44
|
52
|
|
2024/04
|
81
|
90
|
39
|
48
|
67
|
69
|
70
|
87
|
89
|
85
|
65
|
63
|
46
|
21
|
66
|
98
|
91
|
89
|
76
|
79
|
74
|
83
|
51
|
66
|
70
|
66
|
49
|
47
|
65
|
48
|
|
|
2024/03
|
51
|
95
|
102
|
104
|
60
|
51
|
97
|
61
|
76
|
106
|
122
|
93
|
85
|
92
|
76
|
88
|
107
|
80
|
93
|
49
|
87
|
78
|
72
|
56
|
45
|
64
|
59
|
135
|
147
|
106
|
71
|
|
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