Air Quality
Excellent
No health implications.
10
PM2.5
29
PM10
106
O3
1.0
CO
10
SO2
13
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
23 Aug
46
Excellent
Sun
24 Aug
33
Excellent
Mon
25 Aug
42
Excellent
Tue
26 Aug
48
Excellent
Wed
27 Aug
38
Excellent
Thu
28 Aug
37
Excellent
Fri
29 Aug
21
Excellent
Air quality in the last 12 months (Xihu)
|
2025/06
|
60
|
52
|
32
|
22
|
43
|
41
|
29
|
41
|
39
|
24
|
34
|
38
|
27
|
36
|
38
|
21
|
30
|
35
|
36
|
24
|
30
|
41
|
44
|
47
|
64
|
52
|
47
|
28
|
31
|
17
|
|
|
2025/05
|
26
|
42
|
37
|
50
|
44
|
48
|
54
|
46
|
72
|
46
|
54
|
57
|
61
|
43
|
47
|
36
|
27
|
36
|
37
|
53
|
60
|
71
|
36
|
56
|
51
|
49
|
45
|
47
|
48
|
55
|
54
|
|
2025/04
|
92
|
49
|
77
|
53
|
31
|
60
|
69
|
78
|
79
|
68
|
52
|
26
|
28
|
23
|
59
|
55
|
70
|
57
|
55
|
45
|
45
|
33
|
52
|
66
|
52
|
55
|
56
|
66
|
69
|
60
|
|
|
2025/03
|
82
|
36
|
23
|
56
|
77
|
77
|
64
|
66
|
91
|
85
|
55
|
78
|
61
|
62
|
50
|
53
|
74
|
77
|
73
|
71
|
85
|
77
|
88
|
77
|
104
|
117
|
59
|
41
|
37
|
38
|
55
|
|
2025/02
|
90
|
131
|
52
|
50
|
55
|
66
|
52
|
61
|
76
|
64
|
58
|
72
|
104
|
83
|
100
|
58
|
37
|
35
|
52
|
52
|
55
|
56
|
54
|
57
|
80
|
72
|
92
|
106
|
|||
|
2025/01
|
56
|
64
|
65
|
62
|
113
|
118
|
68
|
50
|
55
|
90
|
116
|
127
|
97
|
77
|
51
|
58
|
64
|
58
|
89
|
91
|
71
|
76
|
83
|
77
|
92
|
82
|
137
|
66
|
128
|
116
|
70
|
|
2024/12
|
50
|
26
|
41
|
42
|
51
|
41
|
45
|
65
|
77
|
102
|
53
|
73
|
78
|
63
|
46
|
56
|
44
|
48
|
87
|
87
|
59
|
63
|
74
|
69
|
79
|
59
|
54
|
59
|
63
|
69
|
48
|
|
2024/11
|
84
|
88
|
69
|
34
|
45
|
40
|
58
|
61
|
52
|
47
|
49
|
55
|
52
|
45
|
47
|
28
|
18
|
26
|
50
|
87
|
73
|
49
|
63
|
64
|
47
|
25
|
32
|
41
|
60
|
67
|
|
|
2024/10
|
22
|
44
|
49
|
47
|
47
|
70
|
36
|
56
|
52
|
35
|
49
|
71
|
66
|
41
|
18
|
58
|
74
|
61
|
23
|
34
|
27
|
40
|
53
|
58
|
71
|
105
|
49
|
50
|
72
|
83
|
82
|
|
2024/09
|
35
|
15
|
42
|
37
|
20
|
30
|
45
|
41
|
41
|
27
|
29
|
43
|
40
|
26
|
23
|
43
|
50
|
43
|
50
|
22
|
16
|
30
|
51
|
42
|
38
|
30
|
49
|
54
|
45
|
18
|
|
|
2024/08
|
21
|
31
|
42
|
25
|
17
|
25
|
30
|
44
|
62
|
31
|
35
|
47
|
45
|
47
|
52
|
52
|
56
|
44
|
27
|
33
|
29
|
21
|
27
|
42
|
52
|
36
|
32
|
42
|
47
|
46
|
35
|
|
2024/07
|
33
|
44
|
21
|
41
|
55
|
23
|
33
|
36
|
44
|
53
|
60
|
58
|
48
|
53
|
54
|
28
|
21
|
38
|
38
|
18
|
35
|
19
|
26
|
24
|
18
|
13
|
13
|
11
|
30
|
40
|
16
|
|
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