Air Quality
Excellent
No health implications.
11
PM2.5
22
PM10
30
O3
1.0
CO
7
SO2
10
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
20 Apr
57
Good
Mon
21 Apr
52
Good
Tue
22 Apr
75
Good
Wed
23 Apr
71
Good
Thu
24 Apr
71
Good
Fri
25 Apr
32
Excellent
Sat
26 Apr
22
Excellent
Air quality in the last 12 months (Yihuang)
|
2025/02
|
38
|
27
|
49
|
56
|
48
|
54
|
61
|
51
|
36
|
48
|
63
|
71
|
79
|
69
|
49
|
42
|
53
|
48
|
42
|
24
|
28
|
23
|
26
|
41
|
65
|
66
|
51
|
39
|
|||
|
2025/01
|
110
|
84
|
96
|
98
|
100
|
94
|
67
|
61
|
59
|
46
|
50
|
55
|
59
|
58
|
71
|
56
|
53
|
64
|
64
|
70
|
68
|
64
|
61
|
101
|
54
|
26
|
56
|
82
|
138
|
70
|
52
|
|
2024/12
|
46
|
51
|
57
|
88
|
56
|
44
|
45
|
69
|
55
|
57
|
35
|
51
|
70
|
58
|
55
|
55
|
57
|
65
|
63
|
60
|
64
|
74
|
60
|
72
|
79
|
82
|
107
|
75
|
71
|
79
|
84
|
|
2024/11
|
30
|
38
|
46
|
54
|
59
|
51
|
47
|
47
|
53
|
56
|
45
|
47
|
52
|
52
|
31
|
36
|
38
|
27
|
35
|
44
|
45
|
34
|
51
|
55
|
41
|
35
|
40
|
46
|
47
|
47
|
|
|
2024/10
|
39
|
38
|
39
|
34
|
38
|
37
|
31
|
21
|
28
|
42
|
56
|
53
|
52
|
74
|
56
|
29
|
36
|
41
|
29
|
29
|
42
|
42
|
37
|
48
|
49
|
52
|
21
|
22
|
48
|
51
|
42
|
|
2024/09
|
44
|
47
|
51
|
43
|
41
|
33
|
24
|
26
|
25
|
30
|
37
|
27
|
32
|
37
|
36
|
34
|
34
|
36
|
35
|
30
|
28
|
30
|
31
|
28
|
37
|
39
|
42
|
33
|
37
|
34
|
|
|
2024/08
|
21
|
27
|
31
|
39
|
29
|
34
|
32
|
30
|
36
|
39
|
35
|
24
|
24
|
25
|
32
|
32
|
27
|
22
|
23
|
31
|
24
|
24
|
31
|
37
|
34
|
33
|
36
|
24
|
30
|
43
|
44
|
|
2024/07
|
25
|
24
|
23
|
23
|
27
|
22
|
22
|
21
|
28
|
29
|
30
|
27
|
24
|
23
|
27
|
30
|
20
|
21
|
20
|
21
|
23
|
25
|
32
|
39
|
33
|
20
|
17
|
19
|
19
|
21
|
21
|
|
2024/06
|
21
|
22
|
26
|
33
|
29
|
32
|
34
|
38
|
37
|
30
|
21
|
24
|
24
|
21
|
22
|
21
|
21
|
28
|
34
|
27
|
26
|
28
|
33
|
25
|
18
|
23
|
27
|
29
|
22
|
25
|
|
|
2024/05
|
24
|
36
|
43
|
28
|
24
|
29
|
42
|
51
|
53
|
51
|
46
|
48
|
57
|
49
|
47
|
60
|
52
|
50
|
49
|
34
|
25
|
27
|
32
|
24
|
21
|
25
|
27
|
27
|
34
|
41
|
26
|
|
2024/04
|
29
|
38
|
30
|
33
|
28
|
31
|
34
|
46
|
34
|
40
|
49
|
51
|
50
|
49
|
52
|
44
|
24
|
28
|
23
|
25
|
32
|
36
|
41
|
46
|
37
|
37
|
37
|
31
|
33
|
20
|
|
|
2024/03
|
33
|
41
|
35
|
46
|
35
|
38
|
53
|
57
|
56
|
60
|
54
|
44
|
55
|
43
|
31
|
24
|
38
|
31
|
42
|
64
|
61
|
50
|
42
|
40
|
33
|
27
|
38
|
31
|
38
|
42
|
32
|
|
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