Air Quality
Excellent
No health implications.
31
PM2.5
44
PM10
17
O3
0.4
CO
7
SO2
38
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Mar
56
Good
Tue
31 Mar
56
Good
Wed
1 Apr
69
Good
Thu
2 Apr
53
Good
Fri
3 Apr
50
Excellent
Sat
4 Apr
42
Excellent
Sun
5 Apr
37
Excellent
Air quality in the last 12 months (Sihui)
|
2026/02
|
29
|
33
|
47
|
64
|
53
|
37
|
31
|
34
|
47
|
57
|
42
|
33
|
44
|
39
|
24
|
28
|
38
|
33
|
43
|
46
|
47
|
37
|
48
|
51
|
37
|
35
|
33
|
19
|
|||
|
2026/01
|
58
|
19
|
37
|
59
|
41
|
38
|
38
|
29
|
34
|
46
|
37
|
59
|
56
|
74
|
74
|
94
|
133
|
125
|
93
|
60
|
25
|
24
|
32
|
44
|
69
|
75
|
50
|
45
|
57
|
57
|
27
|
|
2025/12
|
41
|
31
|
62
|
63
|
64
|
69
|
73
|
56
|
57
|
63
|
57
|
57
|
38
|
21
|
38
|
54
|
39
|
40
|
72
|
45
|
53
|
77
|
77
|
67
|
17
|
37
|
41
|
48
|
56
|
46
|
62
|
|
2025/11
|
28
|
32
|
22
|
11
|
13
|
24
|
34
|
47
|
18
|
9
|
11
|
17
|
21
|
28
|
37
|
41
|
43
|
32
|
21
|
25
|
28
|
32
|
45
|
40
|
35
|
46
|
43
|
49
|
55
|
56
|
|
|
2025/10
|
43
|
25
|
25
|
35
|
17
|
22
|
33
|
32
|
44
|
46
|
47
|
36
|
25
|
26
|
45
|
50
|
47
|
49
|
27
|
14
|
12
|
11
|
15
|
31
|
36
|
44
|
43
|
45
|
50
|
45
|
31
|
|
2025/09
|
28
|
26
|
25
|
26
|
27
|
30
|
26
|
12
|
17
|
22
|
29
|
19
|
27
|
27
|
29
|
25
|
31
|
28
|
27
|
20
|
14
|
22
|
19
|
10
|
18
|
25
|
34
|
35
|
41
|
35
|
|
|
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
|
|
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