Air Quality
Excellent
No health implications.
14
PM2.5
25
PM10
77
O3
0.5
CO
3
SO2
8
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
18 Sep
95
Good
Fri
19 Sep
73
Good
Sat
20 Sep
56
Good
Sun
21 Sep
56
Good
Mon
22 Sep
67
Good
Tue
23 Sep
72
Good
Wed
24 Sep
33
Excellent
Sihui Air quality rank
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