Air Quality
Excellent
No health implications.
8
PM2.5
13
PM10
37
O3
0.8
CO
5
SO2
16
NO2
No health implications.
Advise
Everyone can continue their outdoor activities normally.
Air Quality
Today
24 May
45
Excellent
Mon
25 May
41
Excellent
Tue
26 May
43
Excellent
Wed
27 May
43
Excellent
Thu
28 May
56
Good
Fri
29 May
31
Excellent
Sat
30 May
31
Excellent
Air quality in the last 12 months (Xihu)
|
2026/04
|
40
|
57
|
25
|
41
|
60
|
40
|
61
|
42
|
41
|
33
|
42
|
32
|
43
|
28
|
37
|
33
|
36
|
51
|
66
|
65
|
21
|
13
|
21
|
29
|
44
|
55
|
62
|
41
|
28
|
34
|
|
|
2026/03
|
13
|
20
|
43
|
71
|
72
|
63
|
79
|
61
|
72
|
69
|
77
|
53
|
53
|
72
|
122
|
63
|
32
|
13
|
61
|
55
|
64
|
46
|
26
|
46
|
67
|
34
|
37
|
51
|
62
|
33
|
34
|
|
2026/02
|
40
|
53
|
67
|
67
|
75
|
65
|
41
|
58
|
58
|
70
|
73
|
101
|
59
|
48
|
49
|
33
|
76
|
66
|
72
|
46
|
47
|
78
|
95
|
21
|
33
|
23
|
18
|
43
|
|||
|
2026/01
|
27
|
46
|
70
|
65
|
59
|
63
|
51
|
60
|
70
|
78
|
77
|
75
|
104
|
104
|
102
|
107
|
132
|
189
|
83
|
33
|
60
|
70
|
86
|
103
|
94
|
91
|
64
|
54
|
69
|
39
|
23
|
|
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
|
|
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