Air Quality
Excellent
No health implications.
6
PM2.5
15
PM10
34
O3
0.5
CO
4
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Oct
57
Good
Fri
24 Oct
55
Good
Sat
25 Oct
58
Good
Sun
26 Oct
56
Good
Mon
27 Oct
58
Good
Tue
28 Oct
20
Excellent
Wed
29 Oct
47
Excellent
Air quality in the last 12 months (Sihui)
|
2025/08
|
23
|
26
|
29
|
35
|
25
|
20
|
32
|
35
|
35
|
26
|
29
|
27
|
27
|
28
|
14
|
20
|
26
|
16
|
22
|
21
|
24
|
30
|
40
|
28
|
24
|
28
|
35
|
31
|
29
|
24
|
28
|
|
2025/07
|
19
|
28
|
34
|
39
|
43
|
39
|
35
|
27
|
28
|
24
|
18
|
31
|
26
|
33
|
33
|
33
|
37
|
37
|
27
|
13
|
16
|
16
|
22
|
21
|
18
|
22
|
37
|
37
|
27
|
30
|
23
|
|
2025/06
|
41
|
36
|
18
|
37
|
44
|
39
|
32
|
26
|
33
|
39
|
25
|
25
|
20
|
21
|
20
|
31
|
22
|
23
|
24
|
25
|
24
|
23
|
24
|
25
|
27
|
23
|
19
|
21
|
26
|
24
|
|
|
2025/05
|
32
|
49
|
43
|
32
|
33
|
32
|
26
|
30
|
23
|
37
|
33
|
42
|
52
|
43
|
31
|
24
|
31
|
24
|
34
|
33
|
31
|
33
|
28
|
22
|
39
|
46
|
55
|
60
|
33
|
23
|
40
|
|
2025/04
|
25
|
42
|
63
|
54
|
67
|
67
|
82
|
69
|
60
|
46
|
40
|
71
|
184
|
146
|
94
|
90
|
75
|
68
|
43
|
42
|
31
|
37
|
41
|
32
|
15
|
40
|
42
|
26
|
41
|
49
|
|
|
2025/03
|
37
|
33
|
46
|
26
|
14
|
10
|
16
|
28
|
42
|
66
|
43
|
36
|
34
|
35
|
22
|
18
|
45
|
32
|
32
|
42
|
55
|
63
|
60
|
68
|
67
|
52
|
39
|
41
|
14
|
9
|
10
|
|
2025/02
|
44
|
29
|
10
|
30
|
35
|
40
|
19
|
43
|
42
|
41
|
50
|
54
|
43
|
59
|
44
|
58
|
41
|
41
|
48
|
51
|
26
|
32
|
16
|
32
|
53
|
62
|
71
|
50
|
|||
|
2025/01
|
73
|
70
|
52
|
64
|
76
|
70
|
73
|
72
|
70
|
42
|
38
|
42
|
50
|
68
|
50
|
59
|
47
|
51
|
52
|
55
|
66
|
72
|
63
|
45
|
33
|
19
|
25
|
39
|
58
|
71
|
41
|
|
2024/12
|
59
|
67
|
58
|
55
|
66
|
71
|
40
|
21
|
53
|
55
|
42
|
24
|
31
|
56
|
45
|
40
|
46
|
41
|
47
|
64
|
54
|
60
|
63
|
67
|
61
|
60
|
75
|
78
|
80
|
87
|
65
|
|
2024/11
|
36
|
33
|
45
|
43
|
35
|
46
|
32
|
30
|
38
|
34
|
36
|
36
|
38
|
27
|
19
|
21
|
23
|
18
|
17
|
15
|
19
|
29
|
31
|
41
|
25
|
14
|
23
|
29
|
27
|
42
|
|
|
2024/10
|
27
|
22
|
33
|
29
|
29
|
31
|
49
|
63
|
47
|
30
|
35
|
49
|
66
|
69
|
49
|
46
|
35
|
45
|
34
|
23
|
26
|
26
|
14
|
24
|
26
|
31
|
26
|
12
|
20
|
30
|
32
|
|
2024/09
|
29
|
33
|
27
|
25
|
28
|
14
|
18
|
20
|
18
|
27
|
34
|
39
|
29
|
31
|
20
|
23
|
24
|
24
|
32
|
27
|
18
|
13
|
16
|
13
|
26
|
27
|
31
|
35
|
35
|
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