Air Quality
Excellent
No health implications.
3
PM2.5
9
PM10
29
O3
0.8
CO
8
SO2
20
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
30 Jan
61
Good
Sat
31 Jan
39
Excellent
Sun
1 Feb
53
Good
Mon
2 Feb
87
Good
Tue
3 Feb
93
Good
Wed
4 Feb
92
Good
Thu
5 Feb
38
Excellent
Air quality in the last 12 months (Xihu)
|
2025/12
|
80
|
130
|
79
|
83
|
65
|
94
|
88
|
100
|
107
|
113
|
117
|
107
|
41
|
50
|
59
|
72
|
95
|
184
|
171
|
146
|
83
|
46
|
43
|
36
|
69
|
72
|
83
|
86
|
97
|
116
|
121
|
|
2025/11
|
46
|
57
|
84
|
55
|
31
|
45
|
43
|
24
|
21
|
55
|
57
|
41
|
46
|
58
|
77
|
74
|
79
|
26
|
30
|
48
|
53
|
66
|
71
|
60
|
83
|
77
|
86
|
83
|
89
|
89
|
|
|
2025/10
|
34
|
40
|
47
|
45
|
45
|
27
|
37
|
71
|
61
|
46
|
61
|
68
|
66
|
53
|
58
|
52
|
54
|
36
|
14
|
28
|
34
|
36
|
40
|
44
|
66
|
65
|
79
|
96
|
67
|
95
|
49
|
|
2025/09
|
22
|
35
|
32
|
38
|
37
|
31
|
37
|
32
|
18
|
19
|
21
|
26
|
24
|
21
|
26
|
39
|
41
|
33
|
42
|
25
|
39
|
37
|
42
|
18
|
21
|
26
|
38
|
47
|
48
|
48
|
|
|
2025/08
|
34
|
43
|
31
|
16
|
15
|
10
|
13
|
21
|
25
|
33
|
37
|
26
|
29
|
22
|
14
|
19
|
27
|
21
|
17
|
14
|
19
|
25
|
25
|
31
|
24
|
24
|
22
|
21
|
33
|
30
|
19
|
|
2025/07
|
16
|
31
|
32
|
35
|
27
|
33
|
36
|
39
|
23
|
18
|
26
|
23
|
16
|
28
|
37
|
33
|
40
|
33
|
27
|
13
|
9
|
13
|
14
|
16
|
23
|
24
|
16
|
23
|
18
|
26
|
18
|
|
2025/06
|
33
|
11
|
26
|
30
|
32
|
28
|
27
|
17
|
20
|
27
|
17
|
17
|
36
|
22
|
10
|
30
|
19
|
10
|
14
|
15
|
17
|
11
|
10
|
15
|
30
|
30
|
24
|
21
|
18
|
20
|
|
|
2025/05
|
60
|
54
|
61
|
56
|
22
|
46
|
96
|
34
|
30
|
49
|
42
|
48
|
49
|
47
|
71
|
30
|
28
|
40
|
28
|
16
|
17
|
23
|
28
|
56
|
53
|
67
|
66
|
39
|
24
|
35
|
18
|
|
2025/04
|
59
|
67
|
70
|
73
|
74
|
71
|
73
|
72
|
74
|
47
|
51
|
208
|
177
|
127
|
59
|
64
|
64
|
68
|
35
|
39
|
27
|
26
|
54
|
35
|
26
|
25
|
27
|
44
|
64
|
61
|
|
|
2025/03
|
68
|
47
|
32
|
23
|
51
|
72
|
66
|
62
|
71
|
81
|
88
|
55
|
54
|
51
|
26
|
50
|
37
|
50
|
50
|
55
|
62
|
68
|
76
|
74
|
79
|
89
|
78
|
74
|
52
|
57
|
49
|
|
2025/02
|
55
|
33
|
61
|
74
|
81
|
53
|
70
|
46
|
37
|
58
|
84
|
92
|
108
|
66
|
47
|
56
|
60
|
45
|
52
|
46
|
52
|
36
|
84
|
97
|
109
|
111
|
108
|
72
|
|||
|
2025/01
|
125
|
109
|
170
|
146
|
155
|
116
|
76
|
77
|
66
|
46
|
64
|
82
|
102
|
81
|
87
|
55
|
70
|
82
|
90
|
110
|
111
|
90
|
105
|
150
|
50
|
30
|
60
|
86
|
165
|
93
|
58
|
|
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